Journal of Dental Medicine

Another survey on etched porcelain laminate veneers in aesthetic dentistry

F Farshchian

Normal 0 false false false EN-US X-NONE AR-SA In some clinical interventions, there have been some doubts on replacing resin veneers by etched porcelain veneers. Never the less, Public awareness and demand for more aesthetic treatments caused increased usage of laminate veneers in operative treatments as routine treatment method. Dental material companies have rapidly produced newer materials to replace the old ones and respond the needs. Thus, dental science has developed in aesthetic operative dental science. Each novel treatment modality requires modern material and methods that needs experience and knowledge in order to eliminate the complications. Many clinical researches on durability and guidelines of each method have been conducted. Porcelain veneers require limited tooth preparation and brings high esthetic. In addition, their function and durability are acceptable and their favorable path of insertion is compatible to periodontal tissues.

Treating Bony craters by osseous resection in periodontics: Crater therapy

V. Selahi Moghadam

Normal 0 false false false EN-US X-NONE AR-SA Treating bony craters by surgical method needs elimination or reduction of bony lesions as well as providing sufficient bone by minimum osteotomy in order to preserve supporting bone. Furcation preservation is very important. Most mandibular molars are overtreated from buccal aspect that leads to inverted morphology and affects buccal forcation. Identifying anatomical structures and their relation to lesions is essential. In crater therapy, furcation and tooth trunk are two major anatomical structures. Low to medium Craters are appropriate for osseous resection. Craters of maxillary molars with palatal plate bone loss are treated by 10 degree palatal inclination and decreasing buccal bone according to root trunk. Besides, osteoplasty is indicated for buccal bone. Second molars are treated similarly but they have longer root trunks and thicker buccal bone which needs osteoplasty. Craters of Mandibular first molar area are treated by osteoplasty in lingual bone as well as buccal bone reduction according to root trunk . likewise, second molars are treated but they have more lingual bone as well as lingual inclination of teeth and longer root trunks. On the other hand, scalloped morphology is not sufficiently favorable. Therefore, in order to change flat or low scalloped morphology we should not destroy supporting bone.

Statistical evaluation of osteoarthritis prevalence in Dentists of Tehran

M. Saheb Jami

Normal 0 false false false EN-US X-NONE AR-SA In current survey, 200 general dentists and 98 general physicians were recruited as test and control groups respectively and analyzed for having osteoarthritis. The prevalence of osteoarthritis was found considerably higher in dentists compared to physicians ( 23.5% to 13.3%) . The mean age of dentists diagnosed with osteoarthritis was 11 years lower than physicians( 48 years to 59 years). Osteoarthritis was noticeably higher in neck among dentists but in back was equal between the two groups. The ratio of Osteoarthritis in men to women was 3 to 2. Among the studied cases, neck was the most frequent site of the disease.

21 cases of Mumps in Iran

M. Rezaie

Normal 0 false false false EN-US X-NONE AR-SA Mumps is a contagious, acute, self limiting, benign disease with very low mortality rate. By classic clinical view, Mumps is increased volume of parotid glands. The disease was known specific disease of parotid glands for many years. Hence, it was named as epidemic parotitis with local and limited site of affecting area. As well as parotid glands, it can affect testicles, ovaries, central nervous system, pancreas, heart, kidneys, thyroid gland, etc. Researchers showed that the disease is not limited to parotid glands but can provoke generalized reactions in the body and parotitis is just the most prevalent clinical feature of it. 21 cases recruited from Imam hospital were observed in this study. The results were similar to the previous international ones except about the frequency rate of the disease which is due to incomplete vaccination in Iran.

Dens in Dent in laboratory Animals

F. Etesam

Normal 0 false false false EN-US X-NONE AR-SA Thorough evaluation was done on the theories, ideas and surveys on dens in dent or dens invaginatus anomaly. Since the histological and embryological structure of teeth in men and mice are similar together, microscopic structure of a case of dens in dent in a rat is described here in detail which is comparable to this anomaly features in human.

The complications of pain management and local anesthesia in endodontic treatments

A. Ghazinori

Normal 0 false false false EN-US X-NONE AR-SA Every individual may need endodontic treatments for more than once during lifetime. Therefore, a deep long anesthesia is desirable for the patients. In order to diagnose correctly and managing pain completely, modern developments should be concerned. By identifying the origin of pain and pain pathways, its management would be more effective. Nowadays, pain is considered as a multifactorial phenomenon that can be influenced by many internal and external elements. In this article, the different theories on pain origin and pain pathway and finally on pain management methods are discussed and evaluated in detail.

Periradicular tissues reaction to the filling materials

A. Khayat

Normal 0 false false false EN-US X-NONE AR-SA Endodontic treatments are based on complete cleansing of root canal as well a multidimensional obturation especially in apical foramen area. This study was done to analyze the reactions of periradicular tissues to filling materials in case of overobturation in endodontic treatments and healing despite extra filling material existence in periradicular tissues. 25 teeth with periradicular lesions (endodontic origin) in patients of 13-85 years were selected. 7 groups were formed based on the time of performing surgical biopsy on the teeth. In 80% of the cases, despite existing extra materials in periradicular tissues, 100% bone healing as well as collagen formation was observed. Besides, some Giant cells and hemosiderine were found around the areas containing sealer.

Thumb sucking habit: mechanism and dimensions

A Khavari

Normal 0 false false false EN-US X-NONE AR-SA Thumb sucking is a harmful prevalent habit among children that has been identified since 70 years B.C. and causes many dentoalveolar disorders affecting both intra and extra oral soft tissues. This habit is harmful in many aspects for the children and even their environment but is not considered as an addiction according to its special features. In thumb sucking habit, both the finger and oral surrounding contribute to the habit by specific mechanism. Moreover, Duration, Frequency and intensity are effective factors that compensate the effects of each other by replacing the decreased reflex. Some Scientists believe this compensation is accidental. As a conclusion, the cooperation of these factors can increase the harmful effects of thumb sucking.

A study on bacteriology of Orthodontic separators

A. Akhavan niaki

Normal 0 false false false EN-US X-NONE AR-SA In this practical study, various types of orthodontic separators were analyzed in order to indentify microbial population on them. Due to high amount of time and energy needed on this issue, only 12 patients were selected. The results showed that elastic separators and Brass wire separators involved the highest amount of aerobic and non aerobic bacteria respectively. Moreover, this can be related to the shape, material and speed of separators in separating teeth and also their place of installation. This phenomenon is evident in clinical observations that installation place of elastic separators often involves inflammation, pain and acute swelling of gingiva. Also, Brass wire separators cause lower bacterial accumulation and no clinical manifestation of inflammation and swelling. Besides, it should be considered that it has polished surface and slow separating effect. According to the results, we should declare that each separator cannot cause accumulation of a specific type of microbes. But the only difference between various types of separators is the difference in

342 cases of pleomorphic adenoma in Iran

Normal 0 false false false EN-US X-NONE AR-SA Pleomorphic adenoma is the most prevalent tumor of salivary glands. In present survey, the cases are selected for analysis from 4 valid centers of the country. Of 573 salivary gland tumors, 342 (60%) were Pleomorphic adenoma of which 189 cases located in major salivary glands mostly in parotid gland and 145 cases in minor glands. This tumor is mostly seen in 30-50 year women. The obtained data from patients and other reports indicated that Pleomorhic adenoma cases can be seen in other exocrine glands except pancreas.