Primary Dentition Research Articles

Evaluation of the Severity of Malocclusion in Children with Osteogenesis Imperfecta.

Occlusion is the way in which the dental arches are related to each other and depends on craniofacial growth and development. It is affected in patients with Osteogenesis Imperfecta (OI) who present altered craniofacial development. The malocclusion present in 49 patients diagnosed with different types of OI aged between 4 and 18 was studied. The control group of healthy people was matched for age, sex, and molar class. To study the mixed and permanent dentition, the American Board of Orthodontics (ABO) discrepancy Index was applied. The primary dentition was evaluated with a Temporary Dentition Occlusion Analysis proposed for this study. The OI group obtained higher scores in the Discrepancy Index than the control group, indicating a high difficulty of treatment. The most significant differences were found in types III and IV of the disease. Regarding the variables studied, the greatest differences were found in the presence of lateral open bite in patients with OI, and in the variable “others” (agenesis and ectopic eruption). The analysis of primary dentition did not show significant differences between the OI and control groups. Patients with OI have more severe malocclusions than their healthy peers. Malocclusion is related to the severity of the disease and may progress with age.

The effect of unhealthy dietary habits on the incidence of dental caries and overweight/obesity among Egyptian school children (A cross-sectional study).

BackgroundObesity and dental caries are public health problems in Egypt. Factors such as unhealthy diet, poor oral hygiene, and physical inactivity can play a major role in both problems. This study was carried out to illuminate the mutual unhealthy dietary risk factors associated with the incidence of both health conditions.MethodsBetween 1 October 2020 and 1 July 2021, 369 Egyptian children (5–10 years) were examined. Dental status was assessed using decayed, missing/extracted, and filled tooth indices (dmft, deft, and DMFT) for deciduous, mixed, and permanent dentitions, respectively. Moreover, the lifestyle, food habits, and body mass index (BMI) were recorded.ResultsA total of 342 (93.7%) of the included subjects suffered from caries, and only 27(7.3%) were caries-free. Based on BMI percentiles, 247 (66.9%) of the youngsters were overweight/obese, while 122 (33.1%) had normal weight. The mean dmft was 6.9 (±4.6), deft 4.2 (±3.3), and DMFT 0.1 (±1.7). In the primary dentition, a significant positive correlation was detected between dmft and BMI, legumes, sweetened milk and juice, soft drinks, and desserts, while a significant negative correlation was detected between dmft/deft, meat/poultry/fish, fresh fruits, and vegetables. A significant positive correlation was detected between deft and BMI, sweetened milk and juice, ice cream, candies, and crackers. In the permanent dentition, a significant positive correlation was detected between age, soft drinks, sweetened juice, desserts, and DMFT, while a significant negative correlation was detected with fresh fruits and vegetables. BMI was significantly negatively correlated with a healthy lifestyle, meat/poultry/fish consumption, and fresh fruits and vegetables while positively correlated with legumes, ice cream, soft drinks, granulated sugars, desserts, fast food, and caffeinated drinks.ConclusionOverweight/obesity was positively correlated with primary dentition dental caries. Desserts (sweetened snacks) and soft drinks could be the common risk factors associated with high caries and overweight/obesity incidence among Egyptian school children; conversely, consumption of fruits and vegetables could hinder both health conditions. Moreover, sweetened juices were associated with primary and permanent dental caries.

OROFUNCTIONAL MANIFESTATIONS IN CHILDREN WITH MICROCEPHALY: CASE REPORTS

The study aimed to describe the clinical and dental features of 2 children diagnosed with severe microcephaly. Brazilian children of both sexes with brownish skin color and complete primary dentition presented oral hygiene difficulties as the main complaint. During anamnesis, 3 dimension (3D) cephalic perimeter reduction in occipitofrontal circumference at birth, intellectual deficit with history of respiratory complications, controlled seizures, and motor and visual impairments were reported. Extraoral clinical and functional examinations verified predominantly oral breathing, with no passive lip sealing and atypical lingual interposition. Intraoral examination revealed grinding of teeth, the presence of a biofilm, chewing on the left side, and deterioration of the occlusal surfaces of primary molars. Knowledge of facial morphology and orofunctional disorders of patients with special care needs in early childhood will allow health professionals to perform preventive and interceptive procedures in these individuals, essential points for defining a prognosis and the elaboration of a health care protocol.

DIAGNOSTIC PROCESS OF COMPOUND ODONTOMA IN PRIMARY DENTITION: CASE REPORT

Compound odontoma is a common odontogenic neoplasm; however, its detection in the primary dentition stage is uncommon. The objective of this work is to describe the diagnostic process of a composite odontoma in a 4-year-old child and review the literature about this lesion. A 4-year-old girl presented with a swelling in the anterior region maxilla. Computed tomography showed multiple hyperdense images suggestive of denticles, delimited by a hypodense halo, above the roots of teeth 51, 52, and 53 and near the germs of teeth 11 and 12. The patient underwent surgical excision of the lesion preserving the deciduous and permanent teeth. Histopathologic examination was compatible with a compound odontoma. Healing of surgical wound was uneventful without complications or recurrence during follow-up. The diagnosis and early management of the lesion allowed the preservation of the associated teeth, preventing further complications.

EVALUATION OF THE FACIAL PATTERN AND ORAL FUNCTIONS IN CHILD PATIENTS WITH MICROCEPHALY

<h3>Objectives</h3> The study aimed to evaluate the correlation of facial pattern and oral functions in children with microcephaly. <h3>Study Design</h3> The population consisted of 7 children with complete primary dentition. Data collection consisted of the analysis of clinical records and front and profile facial photography. <h3>Results</h3> There was a predominance of dolichofacial type (100%) and vertical pattern (85.71%). All had unilateral chewing, mouth breathing, bruxism, and atypical swallowing. The proportion of severe microcephaly (-3DP) was higher in males (<i>P</i> = .04). There was no association between the severity of microcephaly and facial type (<i>P</i> > .05), although the vertical pattern predominated in severe microcephaly (100%). There was a moderate association between the dolichofacial type and the presence of orofunctional disorders (<i>P</i> < .05). <h3>Conclusions</h3> Oral health care for these children should include dental development, the stomatognathic system, and craniofacial growth in early childhood to significantly reduce curative procedures.

The prevalence of dental caries and associated factors among students living with disability in the Amhara region, Ethiopia.

People living with disability are more vulnerable to dental caries and have a high decayed, missed, and filled permanent teeth (DMFT) index and untreated dental disease than nondisabled individuals. In Ethiopia, there is a dearth of information on the oral health status of the disabled population. Hence, this study aimed to determine the prevalence of dental caries and its predictors among special needs school students in the Amhara region, Ethiopia. An institution-based cross-sectional study was done on special needs school students in the Amhara region from November 2020 to April 2021. The study participants were recruited using a simple random sampling technique using a computer random generator. Data collection was done using the World Health Organization oral health survey tool. Data entry was done using Epi-data 4.6 and analyzed using SPSS 26. A logistic regression model was used to identify the possible predictors of dental caries. Four hundredandforty-three students with a mean age of 15.8 ± 3.8 were included in the study. The prevalence of dental caries was 41.5% (95% confidence interval [CI]: 36.3, 46.0) in permanent dentition with a mean DMFT score of 1.3 ± 1.6. The prevalence of dental caries in primary dentition was 23.1% (95% CI: 11.9, 32.1) with a mean decayed, missed, and filled primary teeth (dmft) score of 1.9 ± 0.2. Being 7-12 years old (adjusted odds ratios [AOR] = 3.6, 95% CI: 1.6, 8.3), lower grade level (AOR = 2.4, 95% CI:1.3,4.4), poor oral hygiene status (AOR = 2.5, 95% CI: 1.3, 4.8), and lack of parental supportduring tooth brushing (AOR = 2.2, 95% CI: 1.2, 4.1) were independent predictors of dental caries. A significant amount of special needs school students in the study area had dental caries. Age, grade level, oral hygiene status, and lack of parent support during tooth brushing were independent predictors of dental caries.

Prevalence of Dental Caries With Salivary Assessment in Six to Twelve Years Old School-Going Children in Shahpura Tehsil, Jaipur.

IntroductionDental caries is a chronic, infectious, and irreversible disease of the calcified tissues of teeth, which demineralises the inorganic portion and destroys the organic substance of the tooth, which often leads to cavitation. Epidemiological studies measuring the prevalence and severity of dental caries have used modified versions of Klein and colleagues’ decayed, missing, and filled (DMF) or Gruebbel’s decayed, extraction indicated, and filled (def) indexes; however, these indexes only capture cavitated lesions. Saliva plays a vital role in caries prevention; significant reduction or deterioration of salivary function can aggravate the development of dental caries. Saliva affects the incidence of dental caries in four ways: as a mechanical cleansing agent that results in less accumulation of plaque, by reducing enamel solubility using calcium, phosphate, and fluoride, by buffering and neutralising the acids produced by cariogenic organisms, or by introducing directly through diet and by antibacterial activity. The study aims to assess the prevalence of dental caries and salivary parameters such as salivary pH, flow, and buffering capacity in six to 12 years old children of a rural tehsil of Jaipur.Materials and methodsThe study was done on a population consisting of 400 school-going children in the age group of six to 12 years. Oral examination was undertaken by a single examiner, who is the study's principal investigator, to avoid inter-examiner variability. Testing of resting saliva was done for evaluation of visual inspection of the level of hydration, saliva consistency, pH measurement, saliva quantity, and buffering capacity.Statistical analysisThe data were analysed using the chi-square test, t-test, and statistical software SPSS version 17.00 (SPSS Inc., Chicago, IL). The chi-square test was used to compare and analyse qualitative data, whereas the unpaired t-test was used to analyse and compare quantitative data. Quantitative data were summarised as mean and standard deviation. A p-value of 0.001 or less was considered for standard significance.ResultsThere was no significant difference in resting salivary flow rate between children with decayed, missing, and filled teeth (DMFT) scores less than 5 and DMFT scores of 5. The mean buffering capacity of stimulated saliva was found to be significantly more among children with DMFT scores less than 5 than children with DMFT scores of 5 or more. The mean pH of resting saliva was found to be significantly higher among children with DMFT scores less than 5 than children with DMFT scores of 5 or more.ConclusionThe prevalence of caries based on age was maximum in mixed dentition and minimum in primary dentition. In contrast, the difference in severity based on age was maximum in permanent dentition. The prevalence of caries was higher in children whose parents were aware of dental health; the difference was more significant in children with primary and mixed dentition. This study showed that salivary parameters such as salivary flow rate, salivary pH, and salivary buffering capacity among school-going children correlated with the prevalence of caries.

Spanish Paediatricians' Knowledge, Attitudes and Practices Regarding Oral Health of Children under 6 Years of Age: A Cross-Sectional Study.

Background: Early Childhood Caries (ECC) is a prevalent chronic pathology, and it has a negative impact on the oral and general health of the child patient. Aim: To evaluate the knowledge, attitudes and practices of Spanish paediatricians regarding early childhood caries according to the professional’s years of experience. Material and Methods: A cross-sectional questionnaire was conducted by Spanish paediatricians via WhatsApp and e-mails from January to April 2021. Data were analysed using Chi-squared test, Fisher’s exact test and Cramer’s V test. Results: There were a total of 359 participants. Most respondents were women (81.3%) with up to 10 years of professional experience (31.2%) in primary health care and public health. In most cases, participants had an excellent knowledge of primary dentition (90.8%), but they ignored (56%) when the first visit to the dentist should occur. Regarding the aetiological factors of caries, oral hygiene and prevention, a lower rate of knowledge was observed. The majority of participants (80.8%) were not able to identify white spot lesions and enamel defects (76%). They considered that their knowledge in oral health was deficient, highlighting the need to increase their training. Less experienced paediatricians were found to have higher success rates. Conclusions: The level of knowledge and attitudes regarding early childhood caries of the evaluated paediatricians should be improved. Paediatricians had difficulties in identifying early caries lesions and enamel defects. Nevertheless, a higher level of knowledge and positive attitudes towards dental caries has been detected among paediatricians with fewer years of professional experience.

Dental caries experience and its relationship to demographic factors in 2- to 6-year-old children in Fars-Iran in 2018.

Among oral conditions, tooth decay is the most common chronic childhood disease. Children's dental caries are influenced by several factors, among which diet is one of the most highlighted ones. The present study was conducted to examine the decayed, missing and filled teeth in primary dentition (dmft) and caries-free (CF) indexes as well as the impact of nutrition and demographic factors on oral health of 2- to 6-year-old children in Fars Province. A cross-sectional study was conducted on children aged 2-6 years old to evaluate dmft and CF indices according to the latest WHO standards as well as their demographic characteristics in 2018. A questionnaire was used for data collection. A total of 2220 children were recruited. The mean dmft was 1.37 ± 2.69. The components of the dmft score included decay (1.23 ± 2.6), missing (0.03 ± 0.11) and filling (0.11 ± 0.7) in primary dentition, and the prevalence of caries-free children was 66.5%. The results showed that dmft had a significant positive relationship with breastfeeding termination time, maternal education level and maternal age. Birth weight, consumption of iron, vitamin A and D supplements, age at onset of complementary feeding and maternal occupation had no significant relationship with dmft. The tooth decay index of 2- to 6-year-old children in Fars Province is very different from WHO global standards. Therefore, educating mothers about the duration of breastfeeding is important to achieve standard values for the dental caries index.

The prevalence of caries in the primary dentition and associated factors in children in the city of Parnaíba-Piauí

Aim: To evaluate the prevalence of caries in primary dentition in preschoolers in Parnaíba, Brazil and identify associated factors. Material and Methods: The sample studies were children in primary dentition aged between two and six years. Both the children and their parents or guardians agreed to the child’s participation in the study. Those preschoolers with syndromes or special needs, those who did not tolerate the dental examination and those with a fixed orthodontic appliance were excluded. The questionnaire was completed by a parent or guardian of each child and the 360 children’s teeth were examined, using the International Caries Detection and Assessment System (ICDAS). The data were dichotomized as presence of cavity related to caries - caries free and non-cavitated lesions (ICDAS 0, 1 and 2) and cavitated lesions (ICDAS ≥3).The presence of early childhood caries was determined and cavitation of the carious process was evaluated. Indications for necessary extraction of any primary teeth due to the carious process were noted. Results: The prevalence of caries in our sample of two to five-year-old children was 43.3% (p&lt;0.05), with no significant difference between ages or genders. The majority of children (84.6%) presented with caries in two or more teeth. Only 15.38% of these children had caries in a single tooth. The most commonly affected tooth was number 75, followed by teeth 55, 54 and 84. The prevalence of caries in preschoolers was found to be correlated with low socioeconomic status and poor quality of life. Conclusion: The prevalence of caries in preschool children was 43.3%. Several factors were associated with dental caries in primary dentition. Children with caries were unlikely to use dental floss or brush their tongues, were only taken for dental treatment when they experienced oral pain and had parents who did not consider brushing teeth after a meal to be important.

OCCLUSAL CHARACTERISTICS IN PRIMARY DENTITION OF PRESCHOOL CHILDREN OF NAVI MUMBAI: A OBSERVATIONAL CROSS SECTIONAL STUDY

Background: The occlusal characteristics vary among different populations and ethnic groups. Any deviations in occlusion in primary dentition would be carried to succeeding permanent dentition and to a more pronounced degree. Therefore, it is important to know the occlusion in primary dentition as it helps to predict the occlusion in permanent dentition. To assess the occlusal characteristics of primary dentition and differenceAim: in various parameters in children between 3 to 5 years of age. Each child was examined with teeth in centric occlusion withMethods and Material: the aid of mouth mirror and probe in natural light by a single examiner. Frequency distribution was done with Chi square test using SPSS 21 software. Mesial step was the most prevalent molar relationship. It was seen in 57.5% of subjects on right side and 53.5% on left side.Results: Percentage distribution of canine relationship was 70.3% and 89.0% in Class I and Class II respectively. 56.5% of children had normal overbite, 24.0% had increased overbite, 15.3% had edge-to-edge bite and 4.3% had open bite. The prevalence of normal overbite was observed in 56.5% of population. Early detection of any dental abnormalities will help us provide a more comprehensive treatment to the child.

A New Approach to Diagnosis to Posterior Cross Bite: Intraoral Photography and Wala Ridge.

A posterior crossbite is an occlusion disorder that occurs in the transverse plane. It occurs when the buccal cusps of the upper premolars and molars engage lingually with the buccal cusps of the lower teeth. It can be unilateral or bilateral (involving one or more teeth) in the primary, mixed, or permanent dentition. A crossbite may appear in early dentition stages and it can be dental or functional. It can lead to skeletal crossbite in mixed dentition. Therefore, early diagnosis and treatment are crucial. Material and methods: The selected sample included 204 patients in growing stage divided into two groups: a study group of 102 patients with posterior crossbite and a control group of 102 patients without malocclusion. To analyze the pathology, intraoral frontal photographs and study models were taken, in which the bone component was measured from the Wala Ridge. Results: The use of the photographs to study the Wala Ridge was confirmed. The mean maxillary width was 57.8 mm (SD 1.7) and mandibular width was 56.4 mm (SD 1.7) for the control group, with a maxillomandibular difference of 1.4 mm (SD 0.7); and 52.7 mm (SD 3.7) and 55.5 mm (SD 3.6), respectively, with a maxillomandibular difference of −2.8 mm (SD 1.4) for the study group. A higher maxillomandibular discrepancy was observed in patients with a posterior crossbite that involved more than one tooth in addition to the permanent first molar. It was also higher in patients with bilateral posterior crossbite. Conclusions: Intraoral frontal photography can be used as a diagnostic method to measure the maxillomandibular difference using the Wala Ridge.

Survey on the Use of Zirconia Crowns in Pediatric Population among General Dental Practitioners

Abstract Background Pediatric zirconia crowns are metal free and more aesthetic and compatible option available for the full coronal coverage of the affected primary dentition. These crowns are not new to pediatric dentistry but usage is limited. Materials and Methods A cross-sectional, descriptive survey was conducted among 200 general dental practitioners and were requested to answer a questionnaire. The questions were framed regarding the knowledge of pediatric dental procedures, aesthetic replacement in case of full coverage restorations, and zirconia crown's features and its use in the practice, and were evaluated. Results Results were based on features of zirconia crowns according to which 81.5% participants mentioned them as stainless steel alternative and 62% as biocompatible material. Clinical aspects evaluated the amount of occlusal reduction in case of zirconia crown tooth preparation as 1 to 1.5 mm by 72.5% of the participants. Appropriate type of finish line and type of margins advocated by the participants was chamfer and subgingival finish line, respectively, according 62.0% participants. Conclusion The use of zirconia crowns for replacement of lost tooth structure and post-pulp therapy helps in creating good-looking restorations which help children and adolescents to improve their self-image.

Relación entre la mancha negra extrínseca y la caries dental en una población de Argentina

Many published studies express that the presence of extrinsic black stain on the enamel of tooth surfaces in children and adolescents is associated with less dental caries (CD) activity, this being valid for both primary and permanent dentition.The objective or this researh was to carry out a multifactorial approach to know the relationship between the presence of extrinsic black stain and the presence of caries, in a population of the city of Córdoba, Argentina.Methods. A case-control study (5: 1) was carried out in patients of both sexes from 3 to15 years of age, between the years 2016-2019, who were attended by spontaneous request to the Chair "A" of Pediatric Dentistry, of the Faculty of Dentistry, from the National University of Córdoba (n = 184). All patients underwent a Clinical History. Stimulated saliva was extracted for calcium and phosphate determination and dental biofilm was taken to measure CFU / mL of Streptococcus mutansand Lactobacillus spp.Results. The prevalence of extrinsic black spot was 1.78%. No significant association was found between sex, age and types of dentition between the groups studied. In the problem group, a lower amount of CFU / mL of S. mutans and Lactobacilluss pp was found, a higher concentration of calcium and phosphate and a lower caries index of the primary dentition. Patients with extrinsic black spot had a much lower rate.Conclusions. The extrinsic black spot could be an element of protection against caries, the recommendation for patients who present them would be to remove them from the visible areas and keep them in the rest of the dental elements

Attitude of Midwives towards Fluoride Recommendations and Oral Prevention in Infants and Young Children.

Early childhood caries is a challenge. Early dental screening flanked by multidisciplinary preventions by pediatricians, dentists, and midwives (MWs) may be helpful. New recommendations for dental screening in children (FUs) and fluoride have been introduced in Germany. The aim of this study was to investigate whether midwives consider FUs useful and implement early childhood caries prevention, as well as fluoride recommendations. The survey was conducted using an online questionnaire. Demographic data, including 11 items on early childhood dental prophylaxis and fluoride, were requested. Agreement was recorded using Likert scales. The data were analyzed descriptively. Two hundred and seventeen female MWs participated (age: 44.1 (11.04) years). One hundred and four (47.9%) participants knew about the FUs. Of the MWs, 30.7% found a referral from the first tooth to be very important (important/neutral/unimportant: 27%/27.9%/14.4%), compared with 84.8% for the entire primary dentition (11.8%/2.8%/0.5%). Of the MWs, 41.7% always recommended fluoride toothpaste from the first tooth (often/occasionally/rarely/never: 22.7%/12.4%/7.9%/15.3%) and 48.1% completely rejected fluoride-free toothpaste (always/often/occasionally/rarely: 9.8%/8.9%/17.3%/15.9%). In addition, 54.8% never recommended the use of fluoride tablets (always/often/occasionally/rarely: 9.2%/7.4%/10.2%/18.4%). The FUs are not yet well-known among MWs, and only less than one-third recommended dental check-ups, starting with the first tooth. This contrasts with the high uptake of fluoridated toothpaste. More educational work should be carried out to convince more MWs of the benefits of the FUs.

Oral management of children/adolescents with ectrodactyly-ectodermal dysplasia-clefting (EEC) syndrome: A scoping review.

EEC is a rare syndrome characterized by the triad of ectrodactyly, ectodermal dysplasia, and orofacial clefting, along with other clinical manifestations mainly in hair, skin, and teeth. The present paper aimed to perform a scoping review to collect the most relevant studies and focused on the diagnosis and oral management of EEC syndrome in the pediatric dental setting. This review also pretended to make recommendations and map the gaps in this clinical topic. An exhaustive electronic and manual search was conducted in four databases (PubMed, EMBASE, Google Scholar, and Dentistry & Oral Sciences Source/EBSCO) according to previously established eligibility criteria, using different combinations of keywords, MeSH terms, and Boolean operators. Titles, abstracts, and full-text articles were screened and selected by precalibrated reviewers. A data charting was also accomplished for summarizing the overview of the evidence. A total of 37 references were identified, and 32 titles remained after removing duplicates; then, 25 potential full-text articles were carefully reviewed. Finally, 15 relevant and most informative studies were included. Most studies were single clinical case reports. Only one descriptive retrospective study was detected. None randomized clinical trials or comparative observational studies were found. A medical/dental multidisciplinary approach is needed for the management of EEC syndrome. Diverse dental specialists must be involved. Pediatric dentists must play a principal role in the prevention and treatment of oral diseases; particularly the preservation of the primary and mixed dentitions, trying to achieve normal orofacial growth.

Infraocclusion: Prevalence, Characteristics, and Associated Dental Anomalies in Arabian Children

Aim To analyze the distribution and characteristics of infraocclusion among Arabian children in primary dentition and its associated dental anomalies. Methods A radiographic analysis was performed retrospectively using digital panoramic radiographs of children attending the pediatric dental clinic of College of Dentistry, Majmaah University, Saudi Arabia, from January 2019 to May 2021. The panoramic radiographs were analyzed to assess the distribution and characteristics of infraocclusion and its associated dental anomalies. Descriptive statistics were used for comparisons using SPSS version 21.0 (IBM Corp., Armonk, N.Y., USA). The chi-square test was used to compare percentages. Results Among the study population (542), only 40 children reported infraocclusion of 65 primary molars. Infraocclusion was common in males (90%) and very frequent in the mandibular arch (n = 48 teeth). In the primary dentition, unilateral infraocclusion (62.5%) was very frequent than bilateral presence (37.5%). Single molars were involved in 50% of the patients, while two, three, and four molars were involved in 42.5%, 2.5%, and 5% of cases. The mandibular second primary molar was frequently affected with infraocclusion, while the maxillary first primary molar was less commonly affected. In the mandibular arch, the second primary molar (28, 58%) was more commonly affected with infraocclusion than the mandibular first primary molars and maxillary primary and secondary molars (p < 0.05). The majority of the infraoccluded molars were mild (75%), followed by moderate (23.5%) and severe (1.5%). Hypodontia (12.5%) is frequently associated with infraocclusion, followed by supernumerary teeth (5%) and radix entomolaris of the first permanent mandibular molars (5%). Infraocclusion was more in the second primary molar mandibular arch, while in the maxillary arch, the first primary molars were commonly affected (p > 0.05). Conclusion In Arabian children, infraocclusion was commonly observed in mandibular second primary molars. Unilateral infraocclusion is a mild type of infraocclusion frequent in Arabian children. Numerical anomalies such as hypodontia and supernumerary teeth are associated with infraocclusion.

Comparative evaluation of the retention of two different preformed molar bands: An in vitro study

: The purpose of giving space maintainer in primary dentition is to prevent the migration of adjacent teeth, thus holding space in dental arch for succedaneous tooth to erupt. Molar band is the fundamental component of space maintainer. The retention of band to the tooth surface is important to ensure fixed appliance therapy. Several methods have been described to improve the mechanical retentive surfaces of bands including sandblasting, burs, etc. Sandblasting of the metal surfaces improves the retention by roughening, thereby increasing the surface area and improving the potential for degree of mechanical attachment.: The aim of the study was to evaluate and compare the forces require to deband preformed pre- sandblasted and preformed in-office sandblasted molar band and to determine which type is successful to ensure superior band retention.: Twenty sound permanent molars were selected and equally divided into two groups. In group I, pre sandblasted molar bands were cemented onto the molar teeth and in group II, in-office sandblasted molar bands were cemented onto the molar teeth using ReLyX U200 as luting cement in both. The cemented samples were tested for their resistance to dislodgement on Instron Universal testing machine in tensile mode.: The result showed that the debanding forces required to remove the pre-sandblasted bands were higher as compared to in-office sandblasted molar bands.: Pre-sandblasted bands resulted in greater degree of surface roughness by providing a stronger bond between the band and the tooth as compared to in-office sandblasted bands.

Lip incompetence and traumatic dental injuries: a systematic review and meta-analysis.

Background/aim Traumatic dental injury is an impact injury to the teeth and/or other hard and soft tissues severity of which can lead to pain, as well as aesthetic, psychological, behavioural and functional problems among children. Lip incompetence directly exposes teeth increasing the risk of traumatic dental injuries. This review aimed to assess the existing evidence regarding association of lip incompetence and dental trauma.Methods The review protocol was registered with PROSPERO with Protocol number: CRD42020163069. Electronic searches of grey literature and three databases were performed. Cross sectional studies conducted between the years 2009-2019 on children aged 0-15 years were selected. Studies were evaluated with the help of NIH quality assessment scale. Data on research question, study population, inclusion and exclusion criteria, sample size justification, exposure and outcome clearly defined and adjustment for confounding variables were assessed. All analyses were performed using Review Manager 5.4.Results The study identified 10,223 articles, 33 were included. Among these 20 identified articles reported 'Good' quality with 13 studies reporting 'Fair' quality post assessment. Subject with lip incompetence were at 2.44 (1.59-3.75) times the risk of developing traumatic injuries during primary dentition. This risk increases to 3.26 (2.21;4.53) times in mixed and permanent dentition. At 12 years of age the OR for dental trauma is 3.77 (2.06;6.91) in subjects with incompetent lips.Conclusions The results confirm the association between lip incompetence and dental trauma.

Dental arch form and arch dimensions among a group of Egyptian children and adolescents

BackgroundGrowth and development of the dental arch is considered a continuous and complex biological process. During transition from primary to mixed then to permanent dentition, dental arch form, length and width vary, due to tooth movement and vertical growth of alveolar process. These naturally occurring changes, which happen in untreated individuals, have been used as a comparative standard to assist in diagnosis and treatment planning of children with malocclusion. Therefore, the aim of the current study was to analyze dental arch dimensions in Egyptian children and adolescents with normal occlusion in primary, mixed, and permanent dentitions as well as detection of the most common forms of the dental arches among a group of Egyptian children and adolescents.ResultsResults showed that lower and upper arch lengths showed increase during transition from mixed to permanent dentition. A small increase in lower anterior arch length was recorded during transition from primary (4.63) to mixed dentition (4.70), while reduction of upper anterior arch length was observed during transition from primary (8.35) to mixed dentitions. An increase in anterior arch length was observed in both arches during transition from mixed to permanent dentitions (from 4.70 to 5.42 in the mandible and from7.92 to 9.90 in the maxilla). Arch perimeter, intercanine width, intermolar width increased in the upper and lower arches during transition between dentition till reaching the permanent dentition. It was also found that the ovoid arch form (58%) and square arch form (29%) were the most prevalent among Egyptian children and adolescents followed by the tapered arch form (13%).ConclusionsDental arch measurements of Egyptian children and adolescents can be used as a guide for treatment planning of Egyptian children and can be used in further studies to provide standard values for the arch dimensions of the Egyptian children. Regarding the arch form, the ovoid arch form was the most common among the Egyptian population followed by the square while the tapered arch form was the least common one.