Prevalence Of Ectopic Eruption Research Articles

Daimi Birinci Molar Dişlerdeki Ektopik Erüpsiyon Özelliklerini Belirlemek İçin İki Farklı Sınıflandırma Sisteminin Kullanılması: Retrospektif Kesitsel Çalışma

Objective: The aim of this study is to determine the incidence of ectopic eruption in permanent first molar teeth retrospectively with 2 different classification methods, based on radiographic findings, during the transition from primary dentition to permanent dentition. Material and Methods: This study was conducted with children aged between 6-12 years admitted to pediatric dentistry department. The orthopantomographic radiographs of 2,516 patients were examined. The patients' age and gender, teeth with ectopic eruption and the jaw were recorded. In the classification of ectopic eruption, Young and Barberia-Leache et al.'s classification was used. Data were analyzed with IBM SPSS V23. Differences between teeth were examined with Cochran's Q test. The correlation between Barberia- Leache classification and Young's classification was evaluated with the chi-square test. Significance level was taken as p<0.05. Results: A total of 2,516 patients were included in the study and ectopic eruption was seen in a total of 70 teeth in 47 (23 girls, 24 boys) patients. The prevalence of ectopic eruption was found to be 1.9%. Ectopic eruption of the permanent first molar tooth was seen more in the upper jaw than in the lower jaw. According to Young's classification, the prevalence of permanent first molar eruption in reversible type is higher, while the prevalence of Grade I permanent first molar ectopic eruption is higher according to Barberia-Leache et al.'s classification. Conclusion: Even in cases of ectopic eruption in permanent first molars that are considered severe according to Barberia-Leache et al. classification and Young's classification, spontaneous recovery can be observed with long-term follow-up.

Ectopic Eruption of the First Permanent Molar in the Maxilla: Cephalometric Features of 13 Pediatric Patients

Ectopic eruption of the first permanent molar in the maxilla, generally characterized by the wrong axial positioning during eruption, is reported to occur in about 2–6% of children. Its incidence is surely under-estimated as it frequently remains undiagnosed and, additionally, becomes irreversible, resulting in posterior crowding in such cases. This retrospective study aims to investigate the cephalometric features of patients affected by ectopic eruption of the maxillary first molar in comparison to a control group of patients. From a total of 1935 subjects, 13 patients were enrolled in the study group, while 26 patients were randomly selected as a control group. Lateral cephalometric teleradiographs obtained at the time of diagnosis were used to measure cephalometric values between study patients and controls. The prevalence of ectopic eruption of the first maxillary permanent molar in our patients was 1.14%. The mandibular angle (SN-GoMe) was found to be significantly greater in the study group than in control. The same statistical trend was observed for the inter-maxillary angle (SnaSnp-GoMe); also, the distance Sna-Me was greater in the study group. Differences between groups were statistically significant for the following distances: Snp-Sna, Ba-S and SOR-Sna, which were found to be, overall, greater in the study group. Ectopic eruption of the first permanent molar in the maxilla seems to be associated with morphogenetic characteristics of patients, mainly with a dolichocephalic pattern.

Erupção ectópica do primeiro molar permanente

Ectopic eruption of the first permanent molar means that the molar erupts at an angle usually mesial to its normal path of eruption, causing an atypical resorption in the distal root of the second deciduos molar. In some cases the permanent molar frees itself and reaches normal oclusion, in others, is needed to bring the permanent molar to oclusion. The prevalence of ectopic eruption has been reported to be about 3%.

Prevalence of ectopically erupted teeth in people from age 8 to 25 years- A prospective study

Aim of the study: To determine the prevalence of ectopic teeth in randomly selected people in the age group from 8 to 25 years. Materials and Methods: This prospective study was conducted 1) among patients visiting Pushpagiri College of Dental Sciences, Thiruvalla, and Kerala in the age group 8 to 25 years during a time period of 3 months 2) students of Christ Central School, Thiruvalla, and Kerala in the age group 8 to 18 years was determined through a screening camp. A total sample size of 460 people was selected randomly and was clinically examined for the presence of minimum of one ectopic tooth; from which this data was recorded. Results: The result showed that 20.217% of patients examined had at least one ectopic tooth. Conclusion: Disturbances of eruption may depend on systemic or local factors. The prevalence of ectopic eruption was moderately high. It is important to develop an early diagnosis in order to start treatment at the optimal time. Keywords: Ectopic eruption, Eruption disturbance, Early diagnosis, Interception.

Ectopic eruption of the permanent maxillary first molar: Study in a population of 505 South European children

Aims: Ectopic eruption is a change in the normal path of eruption of a tooth. The aim of this study is to determine the prevalence of ectopic eruption of the permanent maxillary first molars in a Spanish subpopulation of 505 children, its distribution as regards age and gender, unilateral and bilateral occurrence and loss of space. Methods: Periapical and panoramic X-rays were taken of the patients, with six-monthly check-ups to evaluate development. A statistical analysis of the data was performed using the chi-square test (p lessthan 0.05, 95% C.I). Results: A prevalence of 6.7% was obtained being the most common age of presentation was seven years and bilateral occurrence (67.6% of cases) with no statistically significant differences as regards to the gender. Only 14 of the 505 explored patients required treatment for ectopic eruption. Conclusion: This study provides information regarding treatment needs and prevalence regarding molar ectopic eruption in a Spanish population. It is essential for professionals to be familiar with the diagnostic factors, clinical consequences and therapeutic options for ectopic eruption of permanent molars.

Investigation of the maxillary lateral incisor agenesis and associated dental anomalies in an orthodontic patient population

Objectives: The aim of this study was to investigate the prevalence of maxillary lateral incisor (MLI) agenesis and associated dental anomalies as well as skeletal patterns in an orthodontic population, and then to compare it with the prevalence of these anomalies in the general population. Study Design: The material of the present study included the records of the 3872 orthodontic patients. The followings were recorded for each subject with the agenesis of MLI: Age, sex, unilateral or bilateral absence, anterior-posterior skeletal relationship of the maxilla and mandible, and presence of associated dental anomalies. The occurrence of these anomalies was compared with data previously reported for the general populations. Results: Of the 3872 patients examined, 94 were found to have agenesis of the MLI, representing a prevalence of 2.4 per cent, with females being more frequently observed. The most commonly found associated anomalies were ectopic eruption of maxillary canines and reduced or peg- shaped contralateral incisor with the frequencies of 21.3 per cent and 20.2 per cent respectively. Conclusions: Patients with agenesis of MLI showed a significantly higher prevalence of skeletal Class III malocclusion compared with the general population. The prevalence of ectopic eruption, transposition, and transmigration of the maxillary canine and reduced or peg- shaped MLIs were significantly increased. Key words:Hypodontia, missing laterals, associated dental anomalies.

TREATMENT OF ECTOPICALLY ERUPTING FIRST PERMANENT MOLAR IN CHRONIC MYELOGENOUS LEUKEMIA

The ectopic eruption is defined as abnormal eruption which gives to displacement of the teeth and abnormal root resorption of adjacent teeth. The prevalence of ectopic eruption is reported to vary 2~6%, most of them are in the maxilla. Etiologic factors include narrow maxilla, large maxillary teeth, inclined eruption path of the first molar, retruded position of the maxilla and hereditary factor. Irreversible ectopic eruption where the second primary molar is lost often causes mesial tipping and rotation of the permanent molar, unfavorable occlusion and space deficiency for the second premolar. Ectopically erupted teeth should be treated early to maintain normal development of the dentition, harmony of facial growth and occlusal support. The method of the treatment are classified as follows : appliances that is positioned at the contact point for unlocking and the distal movement, fixed appliance that is connected to more than one tooth, and occlusion guiding method after disking or extraction of the second deciduous molar. A case report of a patient with bilaterally ectopic eruption of maxilla and mandible first permanent molar was present. Also, the patient who had experienced the chronic myelogenous leukemia, show various dental developmental complications. The ectopic eruption was treated with a Halterman appliance that was a effective way of correcting of ectopic eruption of the permanent first molar.

Prevalence of Ectopic Eruption, Impaction, Retention and Agenesis of the Permanent Second Molar

To elucidate the prevalence of ectopic eruption, impaction, and primary and secondary retention as well as agenesis of the permanent second molar (M2) among adolescents. After a sample size calculation, dental records, including radiographs, of 1543 patients (722 girls and 821 boys), from three clinics in the city of Malmoe, Sweden, were retrospectively analyzed. Series of annual records and radiographs were examined for all patients from 10 to 16 years of age and were carried out during 2004-2006. The prevalence of ectopic eruption, impaction, and primary and secondary retention as well as agenesis of M2s was registered in a standardized manner and according to preset definitions. In addition, the times of emergence of the M2s were recorded. The prevalence of ectopic eruption of M2 was 1.5%, the prevalence of primary retention was 0.6%, and the prevalence of impaction was 0.2%. This means that the overall prevalence of eruption disturbances was 2.3%. In addition, the prevalence of agenesis was 0.8%. The prevalence of ectopic eruption was significantly higher in the mandible. Those patients with eruption disturbances and agenesis of M2 showed significantly delayed eruption of their other M2s compared to the individuals without any eruption disturbances. The prevalence of eruption disturbances was higher than reported earlier, and, even if the disturbances do not occur frequently, it is important to develop an early diagnosis in order to start the treatment at the optimal time.

Prevalence of intranasal ectopic teeth in children with complete unilateral and bilateral cleft lip and palate.

The objective of this study was to determine the prevalence of ectopic eruption of intranasal teeth. This was a retrospective study, where records of children with repaired cleft lip and palate were analyzed. The study was conducted at a large craniofacial center, the Hospital for Rehabilitation of Craniofacial Anomalies, USP, Bauru, São Paulo, Brazil. The sample consisted of 815 records from patients with bilateral cleft lip and palate (BCLP) and 1,495 records from patients with unilateral cleft lip and palate (UCLP). The age of the subjects was 5 to 10 years old and the groups included both males and females. The results showed that 0.61% of the children with BCLP and 0.40% of those with UCLP had an intranasal tooth. The prevalence of an intranasal tooth for the whole group was 0.48%, and it appeared to be more common in females.

Ectopic eruption of the first permanent molars: prevalence and etiologic factors.

The purpose of this research was to study the prevalence of ectopic eruption of the first permanent molars and possible etiologic factors. A group of 4,232 Thai students, from 6 to 9 years old, was examined. The prevalence of ectopic eruption of the first permanent molars in the subjects was 0.75%. Both the severity of the ectopic eruption and the amount of root resorption on the second primary molars were more pronounced in the maxilla than in the mandible. The important etiologic factors were the eruption path of the first permanent molars relative to reference lines and the size of the mandibular second primary molars. The amount of proximal caries did not seem to affect the prevalence of ectopic eruption.