Journal of Dental Medicine

Analysis and treatment plan in patients with hemifacial microsomia

M. Jafari

Normal 0 false false false EN-US X-NONE AR-SA Treatment planning for patients with this congenital disorder according to their age, eruption of teeth and anatomical type of the disorder is summarized here. It should be noticed that reconstruction of ear, soft tissue lesions and neurological lesions in patients is done after complete reconstruction of facial bones and functioning of its skeletal parts.

Evaluating dentinal surface changes to different conditioners by Electronic microscope

A. Alavi

Normal 0 false false false EN-US X-NONE AR-SA The effects of citric acid 50%, glumma and GC dentin conditioner on dentin were evaluated in different stages and compared to normal dentinal surface. The results obtained by SEM showed that smear layer is formed following cavity preparation can be removed by citric acid 50%. It can also widens dentinal tubules. On the other hand, glumma and GC conditioner can only remove smear layer without affecting dentinal tubules. These results were similar to the results announced by producing companies.

Histopathological analysis of phosphoric acid 37% etching activity on tooth pulp

Normal 0 false false false EN-US X-NONE AR-SA In 9 patients of 11-20 years old, Pulp response to phosphoric acid 37% during a 15 seconds etching period was studied. Class V cavities in cervical third of premolars were prepared as symmetrical couples. All the process was identical in both groups of case and control. In test group, 15 seconds etching period by phosphoric acid 37% was done. The teeth were then restored by ZOE. Only one case complained of pain and discomfort. After 1,2,4,6,12,24,56 days the teeth were extracted. In 100 sections made from extracted teeth of 5 patients , pulpal response to acid reaction was a mild inflammation with good prognosis.

Bonded porcelain Inlays and Onlays

F. Farshchian

Normal 0 false false false EN-US X-NONE AR-SA Currently, the application and use of porcelain inlays and onlays for anterior and posterior teeth that are made in laboratory is increasing. Present article is aimed to evaluate 1. Advantages of porcelain include their aesthetic, strength, low chair-side, biocompatibility and do not depending on metals 2. Disadvantages of porcelains are undesirable tooth wearing, high cost, needing an expert technician and tooth sensitivity that can lead to endodontic treatments. 3. Methods and materials of working with porcelains are thoroughly discussed in this section.

Reporting 3 cases of progressive systemic sclerosis with internal tooth resorption

Normal 0 false false false EN-US X-NONE AR-SA The following reports are introducing 3 patients with progressive systemic sclerosis who had oral manifestations such as limited mouth opening, PDL thickening,... as well as uncommon internal resorption in many of their teeth with any etiologic factor. According to oral manifestations of systemic sclerosis, It seems that internal resorption can be associated to their systemic disease.

An invitro Comparison of Gutta-percha, Amalgam, Cavit and Coltosol paste as apex filling materials in endodontic surgeries

A. Khayat

Normal 0 false false false EN-US X-NONE AR-SA In order to evaluate quality of apex filling materials in endodontic surgeries, studies on extracted teeth were conducted. The teeth were selected and after crown dissection, root canal therapy was done by gutta-percha and simple technique. Afterwards, for each tooth 3mm of root apex was cutted and then the samples were divded into 5 groups of 15 samples.two groups of 3 samples were regarded as control groups. Then, a 3mm cavity was made in apex and were filled by amalgam ( vivdent^TM or Sina ^TM), cavit and coltosol in groups number 2 to 5. The gutta-percha was condensed by a round end tool. The samples were placed in Methylen blue for 48 hours and then by scrubbing lateral walls of the teeth, the penetration of color into root canal space was evaluated by steromicroscope. The obtained results showed that Coltosol was acted better and resulted in more significant changes compared to Amalgam vivident^TM, Sina^TM , Cavit and Gutta-percha.(P≤0.001)

Endodontic's view of replantation

A. Vahid

Normal 0 false false false EN-US X-NONE AR-SA Replantation means replacement of an avulsed tooth. The most important issue is preserving periodontal health during the process. Therefore, root irrigation or drying should be avoided and tooth should be replaced at soonest time possible. Dental socket should be irrigated by warm normal saline without any curettage. Then, it should be splinted by considering function. After 2 weeks, endodontic therapy should be commenced in order to ameliorating periodontium condition and calcium hydroxide application following splint removal.For approximately 2 years, 2 months follow-ups are mandatory. Calcium hydroxide should be replaced in case of washing out. In general, since avulsion is happened mostly in children and prosthetic treatments are impossible in this age, replantation is an appropriate temporary treatment modality until the patient becomes ready to receive prosthetic treatments.

Evaluating eruption of central incisors and first molars in relation to age and sex

Normal 0 false false false EN-US X-NONE AR-SA Eruption is a developmental process in 3 phases of pre-eruptive, prefunctional and functional. Until now there has not been any research on the relationship between eruption and sex and age in Iran in order to compare with the available standards. In This study we recruited 3174 children of 5-8.28 years and eruption sequence in them was evaluated. The results showed that eruption is slightly sooner in girls in comparison to boys which is not statistically significant. The percentage of erupted teeth will increase by increasing age but Maxillary central incisors in boys are the exception. In addition, molars are erupted prior to mandibular centrals.

The relationship between Orthodontic treatments and periodontal tissues

A. Akhavan niaki

Normal 0 false false false EN-US X-NONE AR-SA Periodontal ligament changes depend on amount, duration and type of forces. Teeth movement toward periodontal ligament starts from the initial hours by formation of pressure and traction areas. These areas as well as vascular system must be preserved under the forces. Bone loss is resulted from osteoclasts activity. In spongy bone spaces, osteoid is formed. Due to heavy forces, periodontal tissues are pressed, vessels are blocked and periodontal ligament becomes acellular and hyalinised. Also,The osteocytes of undermining bone are damaged in localized areas. In traction areas, fibroblasts proliferation and elongation of periodontal tissues are resulted and osteoid is formed on the areas which are replaced by bundle bone (a part of lamina dura that includes calcified collagen ligaments). Due to heavy forces, collagen in traction area and blood vessels may become ruptured.