Journal of Dental Medicine

Xeroradigraphy in dentistry

Gh. Mohamadian

Normal 0 false false false EN-US X-NONE AR-SA Xeroradiography is a modern imaging method that can aid diagnosis of oral, dental and maxillofacial lesions, treatment planning and follow-ups. It has been used since 1970 in medical field and has entered dentistry in 1980 after some modifications. In this technique, x-ray is used with no need to developing and fixing radiographs, negatoscope and dark rooms. A selenium sheet is used in this method that is constantly charged electrostatically. A special powder called toner is used for developing process. In order to have a permanent cliché, a photograph is made from the image. The image brightness and contrast is much better than conventional radiographs while the time of exposure and developing is less. While in medical fields it is used in extraoral imaging, in dentistry xeroradiography is used only in intraoral imaging.

Molecular adhesion of binding materials to enamel and dentin

F. Farshchian

Normal 0 false false false EN-US X-NONE AR-SA Without mechanical undercut in dentin, adequate adhesion by binding materials would not be achieved although Both molecular and mechanical retention is much more desirable than sole mechanical retention. Hence, new binding materials should replace conventional bindings. Obviously, one bottle light-cured materials are more easily used, have less risk of incorrect mixing and accelerate dentist's practice. In addition, in cases that caries recurrence is expected glass-ionomers can be the best choice.

Treating Intraradicular Pockets of molars

H. Lotfizade

It appears that until bone graft has not achieved 100% success, intraradicular diseases remain controversial and therefore, different treatment plans are suggested for them. Treating intraradicular diseases depend on many factors: maxillary molars are more prone to bone loss and have worse prognosis. To assess prognosis more carefully these factors should be considered: 1) bone loss: its apical depth, local or generalized 2) bone condition: buccal, lingual, mesial and distal aspects 3) tooth mobility: grades 2 and 3 have not good prognosis. Crown root ratio is also important. 4) the angle of divergence of roots: the more the roots are divergent, the better the prognosis would be. 5)adjacent teeth health 6)tooth position in jaws 7) age and general health of the patients 8) oral hygiene In general, teeth with 2 roots can be treated more effectively than 3 root ones. Maxillary first premolars are exceptions that do not respond to the treatments positively. We should look forward to the future investigations and findings.

Crown margin and its possible effects on periodontal tissues

M. Emamie

Normal 0 false false false EN-US X-NONE AR-SA Correct contour and shape of crown margin or casting finishing line is not sufficient for healthy status of tissues and teeth filling materials. Thus, all the requirements for preservation of tissues should be provided. Gingival health is a very important issue that should be considered before prosthetic treatments. Via conventional methods, supra gingival margins are the first choice of treatment specially when placed on anatomical crown. If there are specific indications such as esthetics, age, caries risk, free gingival margin sensitivity or subgingival fillings , the place of crown margin could be modified.

Granular cell schwanoma : a case report

A. Forozande

Normal 0 false false false EN-US X-NONE AR-SA Granular cell schwanomma is a rare benign tumor that has been reported sporadically. Our case was a 38 year old man with a pink to yellow small lump of 5mm in right buccal mucosa without any complaint of pain or hemorrhage. Microscopic evaluations showed malpighian epithelium with intense hyperplasia in some parts. In underlying connective tissue a new formed tissue is seen with cytoplasmic giant cells. Any malignancy was reported. In this article, clinical and microscopic characteristics as well as misdiagnosis of the disease are discussed.