Trelia Boel

Analyzing Menton Deviation in Posteroanterior Cephalogram in Early Detection of Temporomandibular Disorder

Introduction Some clinicians believed that mandibular deviation leads to facial asymmetry and it also had a correlation with temporomandibular disorders (TMDs). Posteroanterior (PA) cephalogram was widely reported as a regular record in treating facial asymmetry and craniofacial anomalies. The objective of this study was to analyze the relationship of menton deviation in PA cephalogram with temporomandibular disorders (TMDs) symptoms. Materials and Methods TMJ function was initially screened based on TMD-DI questionnaire. PA cephalogram of volunteer subjects with TMDs (n = 37) and without TMDs (n = 33) with mean age of 21.61 ± 2.08 years was taken. The menton deviation was measured by the distance (mm) from menton point to midsagittal reference (MSR) horizontally, using software digitized measurement, and categorized as asymmetric if the value is greater than 3u2009mm. The prevalence and difference of menton deviation in both groups were evaluated by unpaired t-test. Result The prevalence of symmetry group showed that 65.9% had no TMDs with mean of 1,815 ± 0,71u2009mm; in contrast, the prevalence of asymmetry group showed that 95.5% reported TMDs with mean of 3,159 ± 1,053u2009mm. There was a significant difference of menton deviation to TMDs (p = 0.000) in subjects with and without TMDs. Conclusion There was a significant relationship of menton deviation in PA cephalogram with TMDs based on TMD-DI index.

Root Canal Configuration of Permanent Mandibular First and Second Molars Using Radiographic Tube Shift Technique in Dental Hospital Patients at Faculty of Dentistry Universitas Sumatera Utara

The knowledge of the pulp anatomy plays an important role in the success of endodontic treatments. Mandibular molars have been reported with complex configuration canal anatomical, making them one of the most difficult teeth to manage endodontically. The aim of this study was to examine the root canal morphology of mandibular molars using tube shift technique. This study was descriptive with cross sectional approach. A total of 40 patients of each 40 left and right on first and second molars were samples for this study. We used x-rays with tube shift technique to analyzed canal configuration. The number of canal configuration in each root based on Vertucci’s classification was observed. Results showed root canal configuration of permanent first molars on mesial root right region, type I (12.5%), II (22.5%), III (5%), IV (57.5%), another type 3-2 (2.5%), and left region type I (5%), II (37.5%), IV (52.5%), V (2.5%), another type 3-2 (2.5%), and on distal root right region, type I (87.5%), III (5%), IV (2.5%), V (5%) and left region type I (90%), II (5%), III (2.5%), V (2.5%). Molars root canal configuration of permanent second molars on mesial root right region, type I (52.5%), II (35%), IV (12.5%), and left region type I (57.5%), II (22.5%), III (2.5%), IV (12.5%), V (5%), and on distal root right region type I (92.5%), II (5%), V (2.5%) and left region type I (87.5%), II (5%), IV (2.5%), V (5%). Mandibular permanent first and second molars based on Vertucci classification, both mesial and distal roots have found type I, II, III, IV, V, but on mesial roots permanent mandibular first molars have found another types 3-2. Keywords–tube shift technique, root canal configuration, mandibular permanent molars

TMD symptoms and vertical mandibular symmetry in young adult orthodontic patients in North Sumatra, Indonesia: a cross-sectional study

Background: Temporomandibular joint disorder (TMD) includes symptoms of pain and dysfunction in the muscles of mastication and the temporomandibular joint. Differences in vertical condylar height, observed in the assessment of mandibular asymmetry, is a structural alteration that represents a risk factor for TMD. The study aimed to evaluate the association between TMD symptoms and vertical mandibular symmetry in young adult orthodontic patients in North Sumatra, Indonesia.xa0 Methods: The cross-sectional study included 18-25-year-old (mean ± SD, 21.9 ± 2.0 years) old orthodontic patients admitted to the Dental Hospital of Universitas Sumatera Utara, Medan, between June 2016 and March 2017. Vertical mandibular asymmetry was assessed from all 106 subjects using Kjellbergs technique from pre-treatment panoramic radiographs. The TMD symptoms were assessed by structural interviews using modified questionnaires based on Temporomandibular Disorder Diagnostic Index and Fonsecas Anamnestic Index. Results: Of the 106 subjects, 26 (24.5% of the total) with vertical mandibular symmetry and 39 (36.8%) with vertical mandibular asymmetry were positive for TMD symptoms. By contrast, 17 patients (16.0% of the total) with vertical condylar symmetry and 24 patients (22.6%) with vertical mandibular asymmetry were regarded negative for TMD symptoms. There was no significant difference (p=0.520) in TMD symptoms based on vertical mandibular symmetry. Conclusion: The results from this studied Sumatran population indicate that there are common TMD symptoms in young adult orthodontic patients, but there is no significant association between vertical mandibular asymmetry and TMD symptoms. Further study on the development of TMD, mandibular asymmetry and treatment planning for growing patients is suggested, using longitudinal and transitional approaches.