Journal of Dental Medicine

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Tooth Transplantation from one individual to another is a method of replacing missing teeth. This method can be used as an applicable clinical treatment technique due to its numerous advantages .There are different methods of tooth transplantation. Among those, the safest and healthiest is transplantation of non-vital teeth or allostatic transplantation. In this method, the risk of antigenicity in recipient is low and also there is no risk of transmission of infectious diseases such as Hepatities or AIDS. The aim of this study was to evaluate the clinical results of tooth allotransplantation. Current study was conducted on 15 non-vital transplanted teeth within 18 months follow-up. Only one case of rejection was observed which was a Traumatic Rejection. Replacement resorption was found in all the cases while inflammatory resorption was recorded in only two cases. WBC Cross Match Test with pannel cell results were negative in all the cases.

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Normal 0 false false false EN-US X-NONE AR-SA A research was done in oral medicine department of Tehran University dental faculty. 50 patients (23f/ 27m) diagnosed with generalized periodontitis were selected. Questionnaires were obtained including information about demography, familial marriage, hygiene level, frequency of dental visits, teeth brushing, gingival health condition, tooth mobility and bone loss. Furthermore, blood sugar was assessed and compared via following laboratory exams: GTT 2hr, FBS GTT 3hr, GTT 0.5 hr, GTT 1hr.

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Normal 0 false false false EN-US X-NONE AR-SA Palatal lift appliances are used when the soft palate is anatomically normal but dysfunctional and patients suffer from speech problems while surgical correction is not possible. The aim of these prostheses is lifting soft palate to its normal level in order to achieve palatopharyngeal competence. The prostheses are designed based on maximum retention to keep soft palate in new position without prosthesis displacement. Various methods of constructing these appliances are mentioned and discussed in this article.

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Normal 0 false false false EN-US X-NONE AR-SA Buccal surface of Extracted permanent teeth was divided into two parts and etched by 30, 37, 50 and 60% concentrations of phosphoric acid gel and solution. Sealant replica was obtained from the etched surfaces of 50% gel and solution and the samples were examined by scanning electron microscope (SEM). Various views were found on replica. Gels are more effective than solutions and the concentration of 37-40% was found the most efficient one for acid-etching.

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Normal 0 false false false EN-US X-NONE AR-SA Midface is located between frontal bone and occlusal surface of maxillary teeth. For edentulous patients, alveolar process of maxilla is considered. Midface fractures are known as maxillary fractures which are not an appropriate term to use instead of midface fractures.

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Normal 0 false false false EN-US X-NONE AR-SA By development of medical technology, new horizons are opened in treatment of patients. Nowadays, laser has become a surgical appliance that has made impossible possible. Physical characteristics of laser as well as specific adjustability of it provided much unbelievable potential to surgeons. The most primary step in order to use this novel technology is to identify its physical and technical characteristics.

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Normal 0 false false false EN-US X-NONE AR-SA The accuracy of relined impressions is usually acceptable and in some cases is even more accurate than principal impression. Relined Polysulfide and condensational silicone impressions are more accurate than polyether impressions. The reline method compared to retaking them is more economic and needs less chair time.

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Normal 0 false false false EN-US X-NONE AR-SA Recurrent aphthous is a painful condition with 10-12% prevalence in the world. Considerable evidence are existed about the relationship between cellular immune response and recurrent aphthous .In this regard, present study carried out to analyze lymphocyte phenotype in patients with aphthous stomatitis in both active and remission phases of the disease . The results showed CD4 T-lymphocytes are decreased during active phase while there were insignificant changes in CD3 and CD8 T-lymphocytes count compared to normal population. CD4/CD8 ratio was also decreased (P≤0.05). CD16 killer lymphocytes and CD19 cells were increased significantly in active phase of the disease (P≤0.05).

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Normal 0 false false false EN-US X-NONE AR-SA Burning mouth syndrome is a painful oral disease without specific clinical symptoms. Explanation and definition of the disease depend on many factors and is characteristics to each patient.  3 types of this syndrome have been defined. Almost all oral disease specialists believe that burning mouth syndrome is multifactorial and have not mentioned any specific risk factor for it. Currently, etiologic factors are divided into 3 groups of local, systemic and psychological factors.

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Normal 0 false false false EN-US X-NONE AR-SA During the past century, valuable studies were done on maxillary mesiobuccal canals morphology. In general, knowing pulp-chamber floor is a great aid in finding extra root canals. Findings of invivo and invitro canals are highly different which implies difficulties in finding canals in clinical treatments. Therefore in this study by modifying access cavity preparation methods possible orifice areas are introduced. In an invitro analysis, 29% of first maxillary molars canals were found Type 3 and 35% Type 2 in radiographic view of mesiodistal aspect. In intra oral analysis, by modifying access cavity and removing mesial wall dentin, a high percent of these orifices are discovered.

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Normal 0 false false false EN-US X-NONE AR-SA The theory of designing partial prostheses with rotational path of insertion has been debated for years but most dentists do not consider this treatment method. In conventional partial prostheses, the rests have a single path of insertion while in rotational path of insertion, first the center of rotation sits in the rest then the prosthesis is roated and inserted in final position. In rotational path of insertion prostheses, a rigid retainer is needed as well as conventional clasps. The rigid retainer is inserted in undesirable undercut areas that are not used in conventional method. In current study, methods of rotational partial prostheses as well as their advantages and disadvantages are introduced and discussed.

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Normal 0 false false false EN-US X-NONE AR-SA Both surgical and nonsurgical treatments are definitely effective in ameliorating periodontal condition. In nonsurgical treatments, pocket elimination is not an essential part but subgingival infection control is the main objective which can eliminate inflammation, stop destruction, form new attachments, decrease pocket depth (following edema decrease) and finally result in long junctional epithelium formation. In short term, surgery can eliminate pocket depth more effectively although after a while this difference would become less. Besides, nowadays according to infectious nature of periodontal diseases systemic and local antimicrobials are used along with nonsurgical and mechanical treatments specially in rapidly progressing periodontitis, HIV related periodontitis and refractory periodontitis . Therefore, the most appropriate and simplest treatment plan should be selected according to the type of periodontal disease.

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Normal 0 false false false EN-US X-NONE AR-SA In present article, in order to evaluate the role of genetics in the etiology of lichen planus, 14 patients (6 with familial history of lichen planus and 8 without any history of the disease in family) were selected. HLA antigens (class 1, class 2, B, C) were analyzed by lymphocytotoxicity NIH two stage methods. The patient's age range was 24-66. In our study, although patient's quantity cannot represent Iranian population and therefore we cannot report antigen prevalence, we can state that in our sample a relative increase in HLA B5 or B5 cluster was found.

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Normal 0 false false false EN-US X-NONE AR-SA 1482 patients of 3-5 years ( 56% m/44% f) were selected from Isfahan kindergartens. In 1.4% of them, numeric  dental anomaly was diagnosed of which 0.74 %  had congenital missing teeth, 0.06 % had hyperdontia and 0.6% had geminated teeth. 0.72 % of Congenital missing was seen in boys while 1.2% in girls. Also, Gemination was seen 0.12 % in boys and 1.2% in girls which is 10 times more than boys in total study population. 0.2% of cases had concomitant tooth missing and gemination. Missing was mostly seen in mandibular incisors. Germination was seen  80% in mandibular anterior region. Besides, in 50% of the patients who had primary teeth missing, permanent teeth missing in both sides were also diagnosed by radiography. One case found with supernumerary tooth in maxillary lateral incisor region. In this article, the possible risk factors were analyzed in case and control groups. Any significant relationship between these factors and numeric dental anomalies was concluded.

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Normal 0 false false false EN-US X-NONE AR-SA 50 patients with oral lichenoid lesions who had oral candidiasis were selected for clinical examination and histopathologic evaluation. Inclusion criteria were reticular lichenoid lesions or any erosive, atrophic, bullouse or plaque-like changes with any reticular view. Medical and dental history and recent used drugs of patients were recorded in special forms. Incisional biopsy was taken from all the lesions. From Each biopsy, 4 incisions were provided of which one was colored by E&H and the others with PAS. E&H was used for pathologic diagnosis while PAS incisions were used for identifying candidal  psudohyphae in epithelial tissue. In this analysis, findings on lichenoid lesions were obtained as well as observing a single case of candidal infection.

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Normal 0 false false false EN-US X-NONE AR-SA According to the role of microbes as etiologic factors of periodontal diseases, mechanical factors are required to eliminate microbial plaque. Although systemic chemotherapy is mentioned in the articles, it is still ineffective on adult periodontitis. Therefore, using local antibacterials and controlling their release have been considered. In this article, methods and materials that can result in antibacterial slow release in local delivery systems are discussed.

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Normal 0 false false false EN-US X-NONE AR-SA In some dentoalveolar disorders, orthodontic treatments are occasionally failed during the treatment or even after retention phase. As a result, identifying the reasons of failure would be helpful. Since various indistinct factors can cause treatment failure, we focused on skeletal class 2 divisions 1 disorder and by studying 64 patients with the average age of 6.5 years, more data were collected.

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Normal 0 false false false EN-US X-NONE AR-SA Lever is a solid part that can turn on a fulcrum. There are three types of fulcrums. The efficacy of a lever system is measured by mechanical advantage. The first type of lever has the most and third type has the least mechanical advantage. The situation of muscles attachments and direction of forces on teeth in mandible is similar to lever type 3 and therefore, the muscles, bones and teeth can bear occlusal forces. If a destructing contact develops, this lever system will change and cause damaging effects on stomatognathic structures.

 

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Normal 0 false false false EN-US X-NONE AR-SA In present study, 12 patents (10 F/2M) of 19-42 years with gingival recession in 14 sites of the mouth were recruited. Inclusion criteria were considered and following primary treatments, measurements (sulcus depth as well as depth and width of gingival recession and distance between a fixed point and gingival margin ) were done. Free gingival graft from palate was harvested by envelope technique and using saturated citric acid. The distance between a fixed point and gingival margin   and sulcus depth were recorded after 1,2,3,6 month post surgery. In addition, The depth of gingival recession from CEJ was measured 6 month post operatively. Based on tables and statistical methods, the root coverage was 65.35%. by 3 weeks after surgery, the graft was united with the adjacent tissues.

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Normal 0 false false false EN-US X-NONE AR-SA In this study, 30 boy students of 16-17 years were randomly selected and were allocated into three groups: The control group, Bass group in which the members were instructed to brush their teeth with Bass method and Rolling method group in which they were asked to brush  with Rolling Method. Two latter groups brushed their teeth two times a day (morning/night) .for all the participants, ultrasonic scaling was done 4 weeks prior to the study. After 4 weeks, PLI and GI were measured and recorded by Sillness and Loe method. All the participants used a soft multitufted tooth brush. All 3 groups showed lower indices in comparison to basle line measurements but Two latter groups showed  higher difference in comparison to the control group.The difference between Second and third groups was not found statistically significant. Gingival index during 4 weeks of study has not changed siginificantly.The obtained results confirmed the importance of duration and quality of every brushing technique.