سید امیر سعید یاوری

Patients referred for dental treatment may have some systemic diseases. The aim of this study was to assess the history of using medicine in the patients referred to dental school. Methods & Materials: In this descriptive epidemiologic investigation performed with cross sectional method and simple randomized sampling, data forms were completed with only one questionnaire. Age, gender and the history of medication were evaluated in 600 patients refer to Oral Medicine department. From the 600 referred patients, 56% were female and 44% were male. The range of age was from 15 to 75 years, most of the patients had 25-35 years of age. 34% of them had systemic disease. The most common disease in all of them were allergy (6.83%), gaster intestinal disease (6.33%), cardiac disease (5.5%) hypertension (4.16%), tyroid disease (3.63%) and renal disease, anemia-diabetes and arthroskeletal disease. 30.83% of the all were using drugs, The prevalence of using drug was different in the males and females. The most common drugs used by all of them was NSAID and analgesics – Antyhistamins, antibiotics. GI drugs, cardiac drugs, antihypertension and tyroid drugs had the next prevalence. In the present study, we found that there is high usage of drugs in patients who need dental treatments regarding to the probability of drugs interactions it’s necessary for dental students to become well educated in this aspect.

Missing teeth lead to functional, esthetical and occlusal problems. The aim of the present study was to evaluate the incidence of missing teeth (except third molar) clinically in female students of Rasht high schools in year 1999 - 2000. Methods & Subjects: In this epidemiological cross – sectional study 600 female students were examined to find missing, impacted or extracted teeth. The data was collected by means of clinical examination without radiography. The history of syndromes, cleft lip or palate, trauma, extraction, midline deviation, space excess or space deficiency, tooth size or tooth form problems and enamel hypoplasia were evaluated. Additional evaluations on type of jaw, kind of missing (unilateral or bilateral), side of missing and number of missings were performed in this study. SPSS software was used for data analysis, using Phi-cramer’s test for qualitative variables. Six hundred students of 10 high schools in Rasht were examined. The incidence of missing was 16.8% 8.8% was because of extraction and 8% due to impaction or missing. The most incidence of missing was found in the age of 16 and the least was in the age of 18. The most common missing teeth were second premolars and the least were second molars. Early diagnosis of missing teeth can lead to better prognosis and treatment. Another investigation is recommend on men students to compare the findings by gender.Keywords:

One of the most important aspects in oral and maxillofacial surgery is the healing process after periapical surgery during apicotomy, transplantation or pathological surgeries. Past studies with the vascular supply to surgically mobilized dentoalveolar segments, apicotomized transplanted teeth and root resected teeth in periodontal disease, have mentioned occasional encounters with vital root resection and have noted varying degrees of pulpal response to this insult. The purpose of this investigation was to observe the pulpal and periapical responses of dog dental tissues to intentional apical vital root amputation over six months postoperative period. Methods & Materials: Four adult German – Canadian dogs were used in this experimental study. One root of multirooted teeth in left quadrant of each jaw were surgically transected and mandibular quadrants for 12, 13, 24 and 25 weeks following surgery were obtained after the animals were sacrificed by formalin perfusion of the left and right carotids. The tissue blocks were prepared by routine histological methods. Fisher exact test were used for data analysis. The results demonstrated a disruption of the normal pulpal architecture, with initial pulpal degeneration and subsequent early replacement by the periodontal ligament tissue. An intermediate cemental lining of the root canal occurred in all specimens. There was fat tissue in the apical part of the root in some specimens. Pulpal regeneration were seen in 75% of upper molars and 25% of lower molars. Resorption were took place only in two specimens (12.5%). Severe hyperemia were seen in 62.5% of all specimens. The pulp of multirooted teeth, remain vital after transaction of apical part of the root in dogs.

It is important for dentists and specialists to know about impacted wisdom teeth before and after surgery. In this surgery, postoperative complications like infection, bleeding and etc occur by the extraction of this kind of teeth. In this study, the post operative wound infection associated with 100 surgical operations performed during 2000 at OMFS Dept. Shahid Beheshthi Dental School, are reported (4 weeks follow up). Method & Material: This descriptive epidemiological study is performed by completing a data form after observation. This investigation is performed on 100 patients who were physically in a fair status. The patients were accessible easily and they examined at the end of the second and third weeks and the existing signs have been registering. The patients who were suspected of the infection have been following within the next 24 hours. At the end, the last following was performed to evaluating the subperiostal infection after one month. Antibiotics were used in the cases which the surgeon had been used micromotor during the surgery. T-test and one – way and chi – square analysis were used for calculation of the data. The conclusion is announced by p value and if the finding were less than 0.05, they were valuable. The post surgical wound infection rate overall was 6% and the other 94% have passed the usual procedure of recovery. The incidence of infection in the mandible was more than maxilla, and also there was a higher probability of infection in the hard tissue surgery specially in which the surgeon had used micromotor. The triangular flap is caused to infection more than the envelope flap. Most important findings in 100 impacted third molars (100 patients) were:1. In the complicated impacted third molars (like a Cl III or Cl C depth impaction) a new technique with a high concentration are needed. 2. There was relationship between tooth position, flap design, micromotor using and incidence of wound infection that means in all cases with the symptoms of wound infection, impacted wisdom teeth was in the lower jaw, flap design was triangular and practitioner had been used micromotor for removal of third molar. 3. Rate of wound infection not related to the prophylactic use of antibiotic.