Gingival Phenotypes Research Articles

Early-stage success of FGG application in different gingival phenotypes

Early-stage success of FGG application in different gingival phenotypes

Digital photometric analysis as a non-invasive method to determine gingival phenotype: A comparative study

ObjectiveIdentification of periodontal phenotype is critical in clinical practice. Thick and thin tissues respond differently to inflammation, and trauma. It significantly influences the outcomes of restorative treatment, regenerative therapy, and success of implants and periodontal surgery. Periodontal phenotype can be assessed via invasive or non-invasive methods. This study aimed to establish the reliability of non-invasive methods in determining gingival phenotypes in comparison with validated methods. MethodsThis preapproved cross-sectional observational study was conducted at Batterjee Medical College in Saudi Arabia. The participants were conveniently sampled based on the inclusion criteria. The clinical study utilized Colorvue® biotype probes to evaluate gingival tissue phenotype in the region of interest, intraoral digital scanner (IOS) (iTero® scanner), and digital photography. Densitometric acquisition of photographs and intraoral scans was performed using Adobe Photoshop to quantify three-dimensional color measurements expressed in Delta E values (ΔE). Furthermore, patient-reported experience measures (PREMs) were used to evaluate anxiety and pain perception. Values of p < 0.05 were considered statistically significant. ResultsThe analysis of color difference values (ΔE) revealed significant variations in color perception across methods for the thin, medium and very thick groups, indicating perceptible color differences (p < 0.001). The assessment of anxiety levels indicated a statistically significant decrease in stress levels in favor of the IOS method for the medium phenotype. Furthermore, perceived pain was significantly lower with the IOS method than with the probing method for all phenotypes. ConclusionDensitometric analysis of standardized clinical photographs and intraoral scans of the marginal gingiva offers a promising, non-invasive, less stressful, and virtually non-painful method of periodontal phenotype evaluation with reliable numerical outputs. Furthermore, these data may be used to feed AI systems, where machines can learn to recognize color differences and possibly deduce phenotype assessments.

Comparison of different methods used in the classification of maxillary gingival phenotype: A diagnostic accuracy study.

This study aimed to evaluate the reliability and applicability of novel methods for determining gingival phenotypes and compare them with currently recommended methods. Six maxillary anterior teeth from 50 systemically and periodontally healthy patients were evaluated using two conventional methods (periodontal probe translucency method [PP] and transgingival measurement with an endodontic file [EF]), and two novel methods (colored biotype probe translucency method [CBP] and transgingival measurement with a Florida probe [FP]). All data were statistically analyzed. Intra-examiner reproducibility and inter-examiner reproducibility for all methods were analyzed using 10 randomly selected patients who were re-evaluated for each analysis. Moderate agreement was found between EF and PP, with statistically significant differences between median gingival thickness (GT) values for thick 0.8 mm (0.5-1.1 mm) and thin 1 mm (0.6-1.7 mm) phenotypes, and a threshold GT value of ≤0.92 mm (p < .001). FP and PP also showed moderate agreement, with statistically significant differences between median GT values for thick and thin phenotypes (0.80 mm [0.40-1.60 mm] and 0.89 mm [0.40-1.60 mm], respectively), and a threshold GT value of ≤0.8 mm (p < .001). PP and CBP values showed a substantial agreement (p < .001). A statistically significant difference was found between median EF values and CBP categories (p < .001); however, paired comparisons showed that the distinction was applicable only between thin and other phenotypes. Although CBP was found to be successful in detecting the thin phenotype, it was not successful in distinguishing between medium, thick, and very thick phenotypes; moreover, it did not appear to offer any advantages over PP. Although FP may be preferable to EF in measuring gingival thickness, the cost of FP is a disadvantage.

Relationship Between Gingival Thickness and Other Periodontal Phenotypical Features: A Cross-Sectional Study.

This study aimed at characterizing the gingival thickness (GT) and determining correlations with other local phenotypical features. Cone-beam computed tomography scans from adult subjects involving the maxillary anterior teeth were obtained to assess buccal GT at different apico-coronal levels, periodontal supracrestal tissue height (STH), the distance from the cementoenamel junction to the alveolar bone crest (CEJ-BC), and bucco-lingual tooth dimensions in mm. A total of 100 subjects and 600 maxillary anterior teeth constituted the study sample. Variations in mean values of GT were observed as a function of apico-coronal level, tooth type, and gender. GT progressively increased apically. Maxillary central incisors and males generally exhibited thicker GT. Contrarily, females exhibited thinner GT and shorter STH. Tooth dimensions were negatively correlated with GT, as the narrower the tooth crown/root in the bucco-lingual dimension, the thicker the gingiva. GT at the level of the CEJ was dichotomized to differentiate between thin (<1mm) and thick (≥1mm) gingival phenotypes (GP). Teeth with a thin GP displayed greater CEJ-BC and buccolingual tooth width dimensions. Conversely, teeth with a thick GP generally exhibited taller STH and narrower tooth dimensions.

Comparison Between Autologous Albumin Gel and Liquid Platelet-Rich Fibrin Mixture Versus Connective Tissue Graft to Modify the Gingival Phenotype: A Randomized Controlled Trial.

Objectives To assess changes in gingival thickness (GTH) and the width of keratinized gingival tissue (KTW) following treatment with either connective tissue graft (CTG) or an albumin gel-platelet-rich fibrin mixture (Alb-PRF). Materials and methods Twenty treatment sites were included in a split-mouth design involving 10 patients with a thin gingival phenotype in the mandibular anterior region. The sample was randomly divided into two groups, with the Alb-PRF applied to the experimental group and CTG used for the control group. GTH and KTW were measured at baseline and after one, three, and six months. Results GTH increased in both groups during all follow-up periods. However, no statistically significant differences (p > 0.05) between the groups were observed at baseline and six months. At three months, the experimental group exhibited significantly higher GTH (p < 0.001). Additionally, at three and six months, the CTG group showed a superior increase in KTW (p < 0.05). Conclusion Within the constraints of this study, Alb-PRF application for modifying thin gingival phenotypes proved to be an effective therapeutic option, potentially serving as an alternative to CTGs. Although Alb-PRF resulted in thicker gingiva, CTG demonstrated a greater enhancement in KTW.

Prevalence of the Gingival Phenotype in Adults and Associated Risk Factors: A Systematic Review of the Literature.

The relevance of assessing the gingival phenotype prior to the initiation of periodontal, orthodontic, or prosthetic therapy has been clearly demonstrated. However, publications on this subject are either old or concerned with the means of assessing the gingival phenotype or the main factors likely to modify it. The main objective of this systematic review of the literature was therefore to investigate the prevalence of different gingival phenotypes in adults in good general health and with a healthy periodontium. A systematic review of the literature was performed following the guidelines of PRISMA recommendations using an electronic search strategy on four databases (PubMed, Scopus, Cochrane Library, and Embase) complemented by a manual search. Three independent authors were involved in study selection, data extraction, and bias assessment. Results: Of 807 articles, 17 of them, published between 2012 and 2023, involving 3277 subjects from 11 countries and 9766 dental sites, fulfilled the inclusion criteria. The prevalence of the gingival phenotype could not be determined at the level of an individual or a dental arch because all the publications assessed this phenotype only at the level of certain dental sectors, and were not chosen at random. The maxillary central incisors and maxillary or mandibular first molar sectors were associated with a high and thick gingival phenotype, independently of the dental morphology, gender, and age of adult subjects. Furthermore, in these regions, this gingival phenotype tended to be associated with a thick vestibular bone table. In contrast, maxillary and mandibular incisors and premolars more often had a thin gingival phenotype. For other teeth, the results were less conclusive. It is important not to rely solely on the overall appearance of the dentition but to independently assess the thickness and height of the gingiva at each dental site requiring intervention. Finally, this study highlights a key point, namely the need for further longitudinal studies to determine the prevalence in healthy adults. For practicality and feasibility reasons, these studies should be designed according to therapeutic needs, dental sector by dental sector, and within homogeneous source populations. PROSPERO registration: CRD 42023392602.

Crown forms and gingival phenotypes: Insights from a diverse Asian population

ObjectiveThis study aimed to classify the crowns of maxillary central incisors into distinct categories and to examine the associations between these crown forms and morphometric characteristics in an ethnically diverse Asian population. This is significant for the treatment planning and management of cases, especially for the anterior teeth, from the restorative and aesthetic points of view. Method and MaterialsClinical measurements and photographic data were collected from 160 participants, comprising students, staff, and patients of the Faculty of Dentistry, Universiti Kebangsaan Malaysia. The crown length, crown width, contact surface, papilla height, papilla fill, keratinized mucosa width, and gingival tissue thickness were measured. Cluster analyses were performed to identify the different crown form categories and corresponding characteristics. ResultsThe mean crown width measured 7.093 ± 0.637 mm, while the mean crown length was 10.209 ± 0.966 mm. Three crown-form clusters were identified: triangular (50 %), square/tapered (23.1 %), and square (26.9 %) shapes. The triangular cluster had a significantly higher mean papilla height (4.64 mm ± 0.818) and the highest incidence of incomplete papilla fill (17.5 %). The chi-squared test showed a significant difference in crown forms between the different ethnicities, χ2 (2, 160) = 0.033. ConclusionWithin this diverse Asian population, the crown form demonstrates three clusters: triangular, square/tapered, and square, characterized by a notably small average crown width and crown length. Most participants predominantly exhibited triangular crown forms with reduced crown width, crown length, and crown width/ crown length ratio. Furthermore, noticeable variations in crown forms and their morphometric attributes were observed among the three ethnic groups: Malays, Chinese, and Indians.

Digital assessment of supracrestal tissue attachment and its correlation with dentogingival components.

The aim of this study is to measure, in vivo, the supracrestal tissue attachment dimensions (STADs) by means of a noninvasive digital method and to investigate the association between STADs and gingival thickness (GT), tooth position, tooth length, tooth width, keratinized tissue width (KTW), buccal bone thickness (BBT), and bone crest (BC) level. Nineteen periodontally healthy subjects who previously received full mouth periodontal charting, cone beam computed tomography, and intraoral scan for the purpose of implant planning were included in the study. A digital imaging software was used for the superimposition of Digital Imaging and Communications in Medicine and stereolithography files, along with hard and soft tissue measurements. Pearson's correlation and ANOVA statistical analyses were used to investigate potential trends between STADs and other dentogingival components. A total of 203 teeth were assessed, with an average STADs of 2.05mm (±0.99mm). STADs were larger in mandibular than maxillary teeth (p-value <0.001) and decreased from anterior to posterior teeth. STADs exhibited an inverse relationship with BBTs and GTs (p-value <0.001) and the KTW (p-value=0.05). Positive correlations were found between GT and BBT (p-value <0.001), whereas both were negatively correlated with the distance between the cementoenamel junction and BC (p-values 0.019 and 0.006, respectively) and positively correlated with KTW (p-value <0.001). This study highlighted the dynamic nature of STA relative to tooth position. Additionally, it explored the intricate relationships of STADs with various dentogingival components. To the best of the authors' knowledge, this study represents the first application of CBCTs, intraoral scans, and clinical probe depths for noninvasive supracrestal tissue attachment measurements. This study advocates for a personalized assessment of supracrestal attachments, incorporating tooth position and other dentogingival components. The study emphasizes the importance for practitioners to consider the specific patient gingival phenotypes during restorative or surgical planning to avoid adverse outcomes.

The gingival phenotypes and related clinical periodontal parameters in a cohort of Pakistani young adults

ObjectiveTo evaluate the gingival phenotypes of healthy young adult Pakistanis attending a dental institution. MethodsA cross-sectional study of gingival phenotype, probing depth (PD), papilla height (PH), gingival width (GW), gingival thickness (GT), crown width (CW) and crown length (CL) of maxillary central incisors was conducted in 510 healthy, Pakistani young adults, aged 20–35 years, attending a regional dental hospital in Pakistan. The K-means clustering technique was employed to delineate clusters based on the characteristics of the periodontal phenotypes. The resultant data was compared with the available international findings. ResultsThree quarters (76 %) of the 510 patients examined exhibited a thick gingival phenotype, and the remainder a thin phenotype. The K-means clustering deployed the individual into three different clusters 1, 2 and 3, with varying ratios of PD, GW, CW/CL, with significant variations across the three clusters (p < 0.05). Our data where a vast majority of the cohort exhibited a thick gingival phenotype is comparable to most of the populations sampled in other regions of the world. ConclusionTaken together the current data, a first for a Pakistani population, indicate that healthy, young adult Pakistanis had differing gingival phenotypes and crown forms, with the thick gingival phenotype predominating. These results are similar to reports from most other regions of the world. However, a larger study with a broader swathe of the Pakistani population is required to derive country specific data on the subject.

Evaluation of microneedling with and without injectable-platelet rich fibrin for gingival augmentation in thin gingival phenotype-A randomized clinical trial

ObjectiveThe purpose of the current study was to investigate the effect of micro needling (MN) on gingival thickness (GT) and keratinized tissue width (KTW) in individuals with thin gingival phenotypes, either with or without injectable platelet-rich fibrin (i-PRF). Materials and methodsIn this randomized, split-mouth clinical trial, 15 systemically healthy patients, with thin gingival phenotype (<1.5 mm) were randomly treated with MN + i-PRF and MN. MN was performed on one side, and MN + i-PRF on the contralateral side of the same arch at 4 sessions with 10-day intervals. GT; KTW the primary outcome and Plaque index; gingival index Secondary outcome were assessed at baseline and at 1st, 3rd, and 6th months post-treatment. ResultsThe results of the present study showed that both techniques demonstrated a statistically significant increase in GT. GT showed a statistically significant increase from baseline (0.453 ± 0.069 mm in MN, 0.451 ± 0.069 mm in MN + i-PRF) (p = 0.81) to 1 month (0.567 ± 0.075 mm in MN, 0.649 ± 0.075 mm in MN + i-PRF) (p < 0.001*). A follow-up at 3rd month (0.566 ± 0.076 mm in MN, 0.647 ± 0.091 mm in MN + i-PRF) (p < 0.001*) and 6th month (0.564 ± 0.076 mm in MN, 0.644 ± 0.089 mm in MN + i-PRF) (p < 0.001*) showed a statistically significant increase. Intergroup comparison showed a statistically significant GT increase in MN + i-PRF sites at all the time intervals. No, statistically significant difference in KTW was observed in both groups from baseline to 6 months. ConclusionsThe utilization of MN + i-PRF stands as a minimally invasive, non-surgical method to improve GT. Interestingly, using i-PRF as an additional component demonstrated more favorable outcomes compared to using MN alone in enhancing tissue thickness.

Thermographic examination of gingival phenotypes: correlation between morphological and thermal parameters.

To evaluate the clinical and thermographic aspects of the gingival phenotype (GP) in healthy subjects. The study sample examined 264 teeth, upper and lower incisors, comprising 132 central incisors (CI) and 132 lateral incisors (LI), in 33 healthy volunteers. Four periodontal parameters were recorded systematically: ratio of width to length of the dental crown (CW/CL), height of the gingival attachment (KGW), probing depth (PD), and gingival transparency (GT). The temperatures of the attached gingiva (KGW temp) and the free gingival margin (FGM Temp) were also recorded by way of infrared thermography (IRT). The average age of the sample was 30.70 ± 7.65 years. Of the 264 teeth evaluated, 76.1% had a thin GP. There was a significant association between CW/CL (p < 0.001), KGW (p < 0.001), PD (p < 0.007), and FGM Temp (p < 0.006) with the tooth groups. The results show a significant and inversely proportional correlation between clinical parameters and gingival temperature (p < 0.05). A significant association was found between CW/CL (p < 0.026); KGW (p < 0.001); and GP. CW/CL, KGW, PD, and FGM Temp vary according to tooth group. The majority of the sample presented with the thin GP, which was more prevalent in the lower LIs and CIs. No significant association could be observed between thermographic parameters and GP. Knowledge of the temperature of the gingival tissues can be useful in helping to diagnose and plan periodontal treatments. Moreover, our findings will help future studies evaluate the use of IR as an auxiliary diagnostic method in dentistry, eliminating GP as a confounding factor, since it does not seem to influence the temperature of the gingival tissues.

Immediate placement and loading of implants with laser-microgrooved collar in combination with an anorganic porcine bone mineral matrix in the esthetic zone. Twelve-month results of a prospective multicenter cohort study.

Many techniques have been proposed to address post-extraction ridge resorption, which often represents a concern, especially in the esthetic region. The purpose of the present, prospective, multicenter, single cohort study was to investigate, up to 1 year of function, the effectiveness of a protocol for alveolar ridge preservation involving implants with laser-microgrooved surface immediately placed in fresh extraction sockets. Twenty eight patients candidate to tooth extraction in the esthetic zone (site 15-25 and 35-45) were treated by immediate placement of a single laser-microgrooved implants with the adjunct of a highly porous anorganic porcine bone mineral matrix and a collagen wound dressing. Peri-implant marginal bone level (MBL) was evaluated at time of loading, 3 and 12 months after loading. Gingival index, plaque index, probing depth, and bleeding on probing were measured at 3, 6, and 12 months after loading. Dimensional changes at implant sites were digitally evaluated using the best-fit superimposition of pre-and post-socket preservation models. Implant aesthetic score (IAS) as well as patients' post-operative quality of life were also evaluated at 12 months. Comparisons between data relative to thick and thin gingival phenotypes were made using Student's t-test or Mann-Whitney test, as appropriate. The significance level was set at p = 0.05. No patient dropped out, and 28 implants were evaluated at 12 months post-loading. The overall MBL was found to be 0.92 ± 1.11 mm. Volumetric analysis of superimposed models showed an alveolar bone tissue displacement at the buccal aspect of -0.57 ± 0.52 mm in thin phenotypes and -0.46 ± 0.31 mm in thick phenotypes (p = 0.58, unpaired Student's t-test). No signs of soft tissue recession or esthetically unpleasant buccal gingiva were reported. The clinical protocol herein employed showed benefits in maintaining marginal bone levels and soft tissue contour around post-extraction implants in the esthetic zone.

Efficacy of Concentrated Platelets-Rich Fibrin versus Injectable Platelets Rich Fibrin on Gingival Thickness and Keratinized Tissue Width in Subjects with Thin Gingival Phenotype: Split-Mouth Randomized Clinical Trial

Background: Platelet-rich fibrin (PRF) has regenerative characteristics and is used as an autologous source of growth factors for tissue regeneration and wound healing. Objective: Evaluating the efficacy of C-PRF for increasing gingival thickness (GT) and keratinized tissue width (KTW) in subjects with a thin gingival phenotype in comparison with I-PRF injection. Methods: Ten healthy participants with a thin gingival phenotype (GT ≤ 1.0 mm) were enrolled in this study. The upper and Lower arches of the participant’s mouth were split into two sides, and each side was randomly injected with C-PRF, while the contralateral side was injected with I-PRF. GT and KTW were assessed before the treatment, 1 month later, and 3 months after the last injection session. Results: Inter-group comparison between I-PRF and C-PRF groups revealed a statistically significant difference at the 3 month follow-up visit, with a mean difference between C-PRF and I-PRF of ±1.373 mm and an effect size of 0.200 at p= 0.048. Intra-group comparison was significant for both groups in both arches except for the I-PRF group in the upper arch for KTW, which was non-significant at p= 0.266. Conclusion: In individuals with thin gingival phenotypes, C-PRF injections may influence an increase in both GT and KTW. The results suggest that the application of C-PRF may be beneficial as a non-surgical method for increasing GT and KTW. (ClinicalTrials.gov NCT05615155).

Effect of Microneedling and Injectable Platelet-Rich Fibrin on Gingival Phenotype – A Case Series

Introduction: Gingival phenotype is a crucial determinant of the periodontium. It not only maintains the health of the tissue but also plays a decisive role in the prediction of periodontal treatment outcomes. Thin gingival phenotype poses certain risks of poor periodontal treatment outcome in cases of implant, coronally advanced flap, and other root coverage procedures. Thus it becomes the duty of the clinician to deal with such cases by prior planning treatments which can improve the gingival phenotype and thereby enhancing the postperiodontal treatment outcomes to benefit patients. In this case series, a nonsurgical treatment modality microneedling (MN) and injectable platelet-rich fibrin (i-PRF) are employed in an attempt to increase the thickness of thin gingival phenotype. Methods: Five systemically healthy patients with thin gingival phenotypes were included in this study. The lower anterior teeth with split-mouth study pattern have been randomly allocated to nonsurgical treatment modality, i.e., MN alone and MN along with i-PRF. All the patients were followed up for 9 months. Outcomes Assessed: Gingival thickness (GT), Width of Keratinized Tissue (WKT), oral hygiene index, gingival index (GI), the patient reported outcome measures. Results: Both the groups showed an increase in the thickness of gingiva in 9-month follow-up. The mean increase of 0.62 mm in thickness was seen in Group 1 (42%), whereas Group 2 showed a 0.34 mm (27.3%) of increment. No difference is seen with respect to the change in the width of keratinized gingiva in both groups. Conclusion: MN along with i-PRF can provide an efficient nonsurgical option to clinicians to increase GT in cases of thin gingival phenotype.

Impact of gingival phenotype on the periodontal disease.

The aims of the present study were to explore the relations between the gingival phenotype (GP) and the periodontal health status and find the prevalence of a specific gingival phenotype in a small Bulgarian population.

Clinical and computed tomographic evaluations of periodontal phenotypes in a Chinese population: a cross-sectional study.

To investigate the diagnostic value of probe transparency related to gingival thickness (GT) and keratinized gingival width (KGW) at individual and site levels and explore the relationship of buccal bone plate thickness (BT) with GT and KGW. A total of 1,606 teeth from 167 patients with periodontally healthy maxillary anterior region were included. GT was measured with probe transparency and transgingival probing. KGW was measured directly. BTs were assessed at the level 1mm apical to the alveolar crest (BT1) and midpoint of the root (BT2) and evaluated at individual and tooth levels along with their mutual associations. The prevalence of thick gingiva was 53% with probe transparency measurement and 51% with transgingival probing. The cutoff gingival thickness was 0.8mm, which correlated moderately with a Cohen's kappa of 0.386. The mean GT, KGW, and BTs (BT1 and BT2) in the maxillary anterior region were 0.97 ± 0.46, 5.51 ± 1.62, 0.85 ± 0.31, and 0.79 ± 0.32mm, respectively. GT and KGW correlated mildly (r = 0.261), and GT and BTs correlated moderately (BT1: r = 0.298; BT2: r = 0.338). GT and BTs differed significantly between men and women and among different tooth sites. GT and BTs correlated positively in the maxillary anterior region and varied within and among individuals. Sex was a factor influencing the gingival phenotype and bone morphotype. GT measured with transgingival probing, with a cutoff of 0.8mm, could serve as an objective measure to distinguish different gingival phenotypes.

The evaluation of gingival phenotype using visual inspection method by clinicians.

Evaluating gingival thickness is an essential factor for aesthetic, function, and the maintenance of soft tissue health around natural teeth and dental implants. This study aimed to evaluate the accuracy of visual inspection procedures used to identify gingival phenotype by clinicians with different expertise and level of experience. The gingival phenotypes of a total of two hundred cases were identified as either thick or thin via visual assessment with clinical photographs by eight clinicians. One periodontist examined the gingival phenotype of all subjects based on the translucency of the periodontal probe through the gingival sulcus. The accuracy between these two methods was evaluated using percentile agreement and k statistics. The mean percentage of accurately identified cases was seventy-five percent of the cases irrespective of the clinician's experience and expertise. Almost half of the thin phenotype cases were misclassified by clinicians. İnter-examiner agreement was generally fair to moderate and intra-examiner agreement was generally moderate. Within the limits of this study, the present findings demonstrated that the visual inspection method misclassified the cases, especially thin gingival phenotype, compared to the probe translucency method. Therefore, there is a need for identifying a universally accepted, accurate method and clear clinical definitions.

Identification of thin and thick gingival phenotypes by two transparency methods: A diagnostic accuracy study.

There is limited information on the diagnostic accuracy of the transparency method to diagnose gingival phenotypes taking into consideration not only the gingival thickness (GT) but also the keratinized tissue width (KTW). Thus, the aim of the present study was to compare the diagnostic accuracy of two transparency methods using a conventional steel probe (SP) and a plastic color-coded probe (CCP) to identify thin and thick gingival phenotypes. Maxillary anterior teeth (n = 300) of 50 individuals were included in this study. The GT was measured via transgingival assessment at 2 mm apical to the gingival margin. Tooth sites were subdivided into thin or thick phenotypes according to the corresponding GT, respectively, ≤1 mm and >1 mm. SP and CCP were used to determine the gingival phenotype by the transparency method. The KTW was also evaluated. The diagnostic accuracy of the experimental periodontal probes to identify the thin and thick gingival phenotypes were compared. Of 300 gingival sites evaluated, 57% (n = 172) were identified as thin (GT: 0.82 ± 0.12 mm, KTW: 4 ± 1.2 mm) and 43% (n = 128) as thick phenotypes (GT: 1.16 ± 0.12 mm, KTW: 4.3 ± 1.3 mm) by the transgingival method. The SP and CCP were very sensitive (>0.94) to identify the thin phenotype, however, less specific (0.35-0.39) to diagnose thick phenotype. The diagnostic accuracy for the SP and CCP was similar, 0.69 and 0.70, respectively. The steel and color-coded plastic probe were equally effective in identifying thin gingival phenotype at maxillary anterior tooth sites.

GINGIVAL RECESSION IN RELATION TO MUCOGINGIVAL DEFORMITIES AND OTHER PREDISPOSING FACTORS AFFECT FEMALES IN LOWER ESTHETIC ZONE

Background: Gingival recession (GR) is one of the most common esthetic problems affecting the middle and older aged peoples. GR can lead to many changes as root caries, hypersensitivity, erosions, abrasions, plaque retention and aesthetic dissatisfaction. This study aimed to evaluate the prevalence of gingival recession in relation to mucogingival deformities in lower esthetic zone. Methods: A cross-sectional study was done on a sample of 290 females. The participants were interviewed for personal habits and examined for intraoral distribution of gingival recession and its various predisposing factors. Results: The prevalence of gingival recession in lower anterior teeth was 234, 80.69 %.Around half of the participants had Millers' class I GR (n=146, 49%), thin gingival phenotype (n=168, 56.9 %), mucosal and gingival labial frenum attachment(n=132, 44.7%, n=148, 50.2%). Most of the participants had a sufficient attached gingiva (n=246, 83.4%) and normal vestibular depth(n=278, 94.2%). GR were statistically significant with vestibular depth, gingival biotype and attached gingiva (P≤0.05). Conclusion: Gingival recession in lower aesthetics zone was high in females especially Miller class I gingival recession due to thin gingival phenotypes. Most of Yemeni females have adequate attached gingiva, normal vestibular depth with a frequent mucosallabial frenum in lower anterior teeth. Peer Review History: Received: 1 September 2022; Revised: 28 September; Accepted: 6 November, Available online: 15 November 2022 Academic Editor: Dr. A.A. Mgbahurike, University of Port Harcourt, Nigeria, amaka_mgbahurike@yahoo.com Received file: Reviewer's Comments: Average Peer review marks at initial stage: 6.0/10 Average Peer review marks at publication stage: 7.5/10 Reviewers: Dr. Bilge Ahsen KARA, Ankara Gazi Mustafa Kemal Hospital, Turkey, ahsndkyc@gmail.com Dr. George Zhu, Tehran University of Medical Sciences, Tehran, Iran, sansan4240732@163.com Similar Articles: RISK FACTORS OF PERIODONTAL DISEASES AMONG YEMENI YOUNG DENTAL PATIENTS ORAL CANDIDA ALBICANS COLONIZATION RATE IN FIXED ORTHODONTICS PATIENTS PREVALENCE OF MALOCCLUSION AMONG YEMENI CHILDREN OF PRIMARY SCHOOLS

GINGIVAL PHENOTYPE AND FREQUENCY OF RECESSION DURING VARIOUS ANOMALIES OF OCCLUSION

The aim of our research was to determine gingival phenotype and frequency of recession in patients with different types of malocclusion. For this purpose, 174 patients from 20 to 46 years of age were investigated. During our research of gingival phenotype in patients with malocclusion most often thin scalloped biotype was observed - 122 patients (70%), medium thickness – 47 (27,1%), rarely, thick - 4 patients (3,2%) and thick flat - 1 patient (0,6%). According to our data, among investigated patients (174), 75 (43,09%) of them had different type of recession. Whereas RT1 had 43 patients (24,71%), RT2 – 27 patients (15,51%), RT3 only 5 patients (2,87%).In conclusion, it is not rare when gingival phenotypes and recession are combined. Therefore, we should pay more attention during orthodontic treatment of the patients with periodontal disease.