Indian Journal of Dental Education

 The article entitled “Case-Based Computer Assisted Learning in Prosthodontics” by Dr. Saee S. Deshpande and Dr. Sarin Soumil P. was published in volume 2, number 2 of Indian Journal of Dental Education without figures. The figures of the above said article has been published here. The mistake is regretted.

This study was conducted in D.A.V( C ) Dental College Yamunanagar to find the most suitable immersion disinfectant which causes least dimensional changes and preserves the impressions property of reproducibility. Immersion of four randomly selected irreversible hydrocolloid was done for specified period of time in three disinfectants - Glutaraldehyde, Povidone-Iodine and Sodium hypochlorite. Reproducibility was evaluated by determining the extent of reproduction of 25, 50 & 75 micronmetre width lines as per A.D.A Specifications.

Key words: Irreversible Hydrocolloid impression, Disinfectant, Dimensional stability, Reproducibility.

 There have been increasing numbers of applications using saliva, as the target substrate for performing clinical diagnostic tests. These have focused primarily on point-of-care testing. These point of care testing approaches range from, for example, currently available, highly specialized screening tests for the presence of antibodies recognizing HIV to the potential development of “lab-on-achip” platforms. Sampling of saliva is advantageous, since non-invasive, stress free, easy and frequent collections are possible. Apart from acting as first time of defence against foreign pathogenic, it also constantly cleanse and lubricate the oral cavity. Number of biochemical, immunological, toxicological and microbiological analysis are possible in saliva and importance of oral tissues evaluation and neoplasm screening how long been established also, saliva is routinely referenced in forensic odontology and toxicology especially in drug abuse and alcoholism.This can become a non-invasive alternative to blood & urine test, for early disease detection and management in future.

Key words Saliva, clinical diagnostic test, lab on chip

 Recently increased frequency of early onset squamous cell carcinoma (EOSCC) in young patients has been detected. Classic risk factors such as smoking and alcohol consumption are not related to EOSCC. We report a case of EOSCC with no identifiable definite risk factor. A 32-year-old man with compliant of severe radiating pain and an ulcerated mass,1.5 X 2cm in size, was referred to oral medicine department of Mashhad dental faculty .the surface of the lesion was granular and indurated margins were evident. The patient was from a high socioeconomic group with no history of smoking or alcohol consumption, drug abuse or unusual sexual habit. The only probable risk factor was low content of fresh fruits and vegetables in dietary program. The diagnosis of squamous cell carcinoma was designated and confirmed by histopathologic examination. None of tested viruses (Human Papilloma Virus (HPV) 16, 18, Epstein Bar Virus (EBV), Cytomegalovirus (CMV), Human Herpes Virus (HSV)) were found by PCR. It seems that EOSCC has different clinical and demographic characteristics that necessitate further studies in different populations.

Key words: oral cancer, squamous cell carcinoma, young patient, case report

 Lipoma is a benign soft tissue tumor of fat and consider as the most mesenchymal neoplasm which highly occurrence on the trunk and extremities. It’s prevalence in oral and oropharyngeal region is relatively uncommon. Few oral cavity lesions occur before the third decades of life with a fairly balanced sex distribution. Lipoma histopathologically sub classified to fibrolipoma, angiolipoma, myxolipoma myolipoma and osteolipoma according to presence of fibrotic connective tissue, highly vascular, myxoid changes, smooth muscle bundles and area of bone or cartilage metaplasia just close to mature fat cells.,Osteolipoma is a rare variant of lipoma that had mature fat cells as main tissue with area of bony changes. In head and neck region osteolipoma has been reported in CNS, neck, scalp and lat pharyngeal space., In review of English language articles there was eight reported case of osteolipoma in oral cavity.,Our case is an osteolipoma of the floor of mouth in 54 years old age woman with submental mass from 6 months ago and radiographic report suggests teratoma with some radiopaque nests.

Key words: Oral cavity, Tumor, Osteolipoma

 The apical sealing ability of root canal fillings is an important issue for desirable outcome of treatment. The aim of this in-vitro study was to assess the apical microleakage of root canal obturation with MF and .02 tapered gutta-percha as accessory cones using lateral condensation., Fifty six extracted human anterior teeth with single, straight canals were randomly divided in to two experimental groups of 23 teeth each and two control groups of 5 teeth each. The teeth were instrumented with Race rotary Ni-Ti files to a master apical file of #30. Teeth in group 1 were obturated with.06 tapered master cone and.02 tapered gutta-percha as accessory cone with AH26 sealer using lateral condensation. Teeth in group 2 were obturated similarly, except MF gutta-percha was used as accessory cones. Positive control teeth were instrumented but not filled. Negative control teeth were instrumented, obturated and externally sealed. All the specimens were sectioned buccolingually and the maximum of leakage was measured using a stereomicroscope at 8X magnification. Data were analyzed using T-test and 0.1 mm accuracy.The positive and negative controls validated the testing model. There was significant differences between two groups. The average dye penetration in group 1 and group 2 were 3.5-12.5 and 1.75-10.5 mm, respectively.,The most dye penetration was in group 1 and the lowest level of leakage was in group 2, which obturated laterally with.06 master cone and MF accessory gutta-percha.

Key words: 0.06 gutta-percha, standard gutta-percha, lateral condensation, microleakage

 In this study, we have reported an uncommon sign in panoramic radiography of patient who had received ionizing radiation for rhabdomyosarcoma of the nasal fossa and the right ethmoid sinus, at fifteen years ego. The subsequent abnormal development of all maxillary permanent teeth is described and discussed as an uncommon effect of radiotherapy. Six months after referral to the department, the patient reported a painless swelling of the lower left side of mandible. Incisional biopsy confirmed the pleomorphic adenoma.

Key words: Complications; Radiotherapy; Root agenesis; Pleomorphic adenoma

 Plaque control is the most important way in prevention of periodontal disease and caries. On the other hand, tooth brushing is the best and important mechanical way for plaque control. Poor compliance of patients in response to oral hygiene instruction is a common problem. The aim of this study was to evaluate the reasons of poor compliance with brushing in Azadshahr region of YAZD (Iran). 90 Non compliant and 90 compliant men (15-39 years) were recruited and interviewed during home visit. Their knowledge, attitude toward oral heath and their compliance with tooth brushing were evaluated. The results showed that factors in non compliance with brushing were as follows: inadequate knowledge about oral heath. The number of family members, economic status, lack of knowledge about the effect of oral disease on cardio-vascular problems, logistic analysis showed that increase in knowledge about oral heath almost doubled compliance with brushing. Some reasons had been mentioned by the non compliant people for their non compliance with brushing was as follows in descending order: being tired because of daily work being busy.The most important factors in compliance with brushing were as follows in descending order: Prevention of dental caries Having good breath.

Key words: Tooth brushing- Compliance- Oral hygiene

 Maxillary premolars have highly variable root canal morphology, but the possibility of three canals, especially in the second premolar, is quite low; however, it must be considered in clinical and radiographic evaluations during endodontic treatment. These case reports describe the diagnosis and successful clinical management of two patients with three-rooted maxillary first and second premolars.

Keywords: Anatomical variations, maxillary premolar, root anatomy.