Journal of Dental Medicine

Clinical healing following guided tissue regeneration (GTR) in intrabony pockets using a polyurethane membrane was compared to healing following gingival flap surgery (GFS).Ten patients with adult periodontitis and the presence of intrabony defects were selected. Oral hygenic
treatments were performed during a 4- weeks period prior to surgery.One intrabony defects on each patient was randomly chosen to be treated according to the guided tissue regeneration (GTR) procedure. The other side received the control treatment GFS. Test group received the GTP treatment including polyurethane membrane after reflecting the flap and curettage of defect.However, flap surgery and curettage were done in control group.The patients were evaluated for changes in probing depth (PD), clinical attachment level (CAL),recession changes in crestai resorting, and defect bone fill. Clinical examinations were performed again 6 months post operatively.The average of (PD), (CAL) and defect depth (DD) before surgery in test group was 3.23, 13.87 and 7.3 mm respectively and in control group was 3.1, 8.9, 7.4 mm. After 6 months the average of (PD), (CAL) and (DD) was 1.69, 1.68, 3.5 mm, respectively and in control group was 1.24, 1.09, and 2.90mm.Test group and control group showed successful results in treatment of intrabony defects. Test group showed better results than control. No significant difference was observed between two treatment procedures from the point of view of pocket depth reduction, attachment gain, and recession.The bony fill and crestai resorption results suggest similar clinical potential of GTR procedures
compared to GFS in treatment of intrabony pocket. However, in order to gain future insight, larger samples and longer observation periods should be evaluated.

The aim of this study was to evaluate the repair of hard and soft tissue using Osteo Gen and comparing with flap curettage in periodontal defects. 36 periodontal intraosseous defects in sixteen patients involved moderate to advanced periodontitis were randomly selected and allocated to two groups: test (22) and control groups (14). Slow resorption, excellent tissue compatibility, no exfoliation and root resorption were considered during healing. The average of pocket depth in test and control groups was 3.16 and 2.73 mm, respectively. After 6 months, the average of bone repair was 2.18 mm (68.97%) and 0.46 mm (16.84%) in test and control groups. Bone apposition was obtained in test group (0.09 mm) (2.84%) while bone loss observed in control group (0.32 mm)(l 1.72%). Initial pocket depths in test and control groups were 7.68mm and 6.61mm. After six months, re-entry surgery was performed and the measurement of new attachment was 3.45 mm (61.19%) and 2.81 mm (51.28%). Recession of the gingival margin was 1.22 mm (15.80%) and 0,58 mm (8.77%) for test and control groups,respectively. By considering these findings, using of Osteo Gen can be recommended compare with flap curettage in periodontal intraosseous defects.

Background and Aim: School health workers have an important role in education and prevention of common oral and dental diseases. An organized program can be helpful in training and shaping the proper behavior. This study has evaluated the knowledge, attitude and practice of schools health workers in Tabriz about oral and dental health in 2007-2008.
Materials and Methods: This cross-sectional and descriptive study was performed in primary schools in Tabriz. Questionnaires were sent to the schools that had health workers. Levels of the knowledge, attitude and practice of the health workers who had answered this questionnaire were evaluated. SPSS software and independent T-Test and Paired- Sample T-Test were used for analyzing the results.
Results: Fifty eight out of 64 school health workers were women. Mean age of school health workers was 45 years. Forty four of school health workers had passed special course about oral health and dental health. 49 of them had passed special educational course the mean of acquired knowledge score was 6.77 out of 10 and women's scores were significantly higher. Also women had more work experience than men. The mean of acquired attitude and practice scores were 7.42 and 7.14 out of 10, respectively.
Conclusion: Findings show that performing of the educational courses during work and experience has an effective role in the scales of the health workers. Progress in this situation can be achieved by retraining programs and accessible pamphlets.

Background and Aims: Multiple supernumerary teeth are rare and often found in association with syndromes such as Gardner, Cleidocranial dysplasia and cleft lip and palate, with a much less chance for isolated non-syndromic cases. The aim of this study was to report a case with 6 supernumerary teeth without syndromic association.
Case Report: The patient was a 33 year-old female, referred to oral diseases and diagnosis department with chief complaint of sensitivity to cold and hot food in right upper premolar region. Oral examination revealed 5 erupted lingually supernumerary teeth (four in mandibular and one in maxillary premolar region, respectively). Further panoramic radiography clarified an extra impacted tooth in the palatal region of left premolar maxillary area. All extra teeth had been appeared since the age of 17 during one year, as the patient claimed. Medical history and thorough clinical and paraclinical examinations were not significant except for the hypothyroidism, since 5 years ago. No other family member noticed to be the case. Based on our findings, a diagnosis of non-syndromic multiple supernumerary teeth was established.
Conclusion: A thorough examination of each patient presented with supernumerary teeth, including panoramic and intraoral radiographic images may provide valuable information regarding accompanying syndromes and unerupted teeth. Early diagnosis is an essential step for orthodontic or surgical decisions making, preventing or avoiding worsening complications such as malocclusion, adjacent normal teeth delayed eruption or rotation, diasthema, cystic lesions and resorption of contiguous teeth.

  Background and Aims: Diagnosis of vertical root fractures often poses a clinical dilemma. Diagnosis of VRF in intraoral radiographs, except in cases where the beam is perpendicular to the direction of fracture is difficult. Misdiagnosis often leads to wrong decisions about the design of teeth future treatment plan. The aim of this study was to determine the diagnostic accuracy of reverse contrast enhancement options in digital radiography, and to compare it with the original images to find a suitable method to detect vertical root fracture.

  Materials and Methods: In this experimental study, digital radiography with phosphor plate detector was taken from 40 extracted single root teeth. From each intact and fractured tooth, the original and reverse contrast images captured and stored. Two expert observers viewed the images twice with an interval of two weeks. Diagnostic criteria (Accuracy, PPV, NPV, Specificity and Sensitivity) in form of absolute and complete for each observer and each images was calculated. Inter and intra observer reliability was obtained using Mc-Nemar test.

  Results: No significant differences in inter-observer reliability between the initial appearance and reverse contrast was observed (P>0.05), but in view of the intra-observer reliability in two cases, the difference was significant (P<0.05). No significant difference in the accuracy, sensitivity, specificity and PPV was observe between the two used images (P>0.05), whereas significant difference between the two images was found in NPV index (P<0.05).

  Conclusion: The use of reverse contrast enhancement option for detection of vertical root fracture did not show significant difference from initial view.