A Survey on Prevalence, Causes and Prevention of Postcementation Hypersensitivity.

This study evaluated the prevalence and causes of post-cementation sensitivity and possible prevention measures according to the experience of dentists through an internet survey. A questionnaire was prepared with 25 items based on a survey introduced by Rosenstiel and Rashid. An online site was created for the participation to the survey. A total of 322 participants responded the questionnaire. The results of the questionnaire indicated the amount of tooth preparation (42.1%) is the most frequent reason for hypersensitivity followed by water-cooling with pressure (11.2%) and provisionals (10.9%). "Very important" response for tooth reduction, time before cementation, overheating, luting agent, occlusion and provisionals were found to be of statistical significance (p⟨0.001). Comparing respondents' opinions the incidence of post-cementation sensitivity appears to be underestimated. Tooth reduction, preparation under high volume spray and quality of provisional restorations was considered to have a significant impact on the incidence of post-cementation sensitivity according to the dentists surveyed across Turkey. Respondents to the questionnaire considered the use of antimicrobial, desensitizing, resin bonding, hemostatic agents, varnishes, type of liner material, rotary instruments to be less effective for prevention of post-cementation sensitivity.

Human immunodeficiency virus/acquired immunodeficiency syndrome knowledge among high school students in Kirikkale province of Turkey.

BACKGROUND: The purpose of the present study was to assess the existing level of knowledge of high school children about human immunodeficiency virus/acquired immunodeficiency syndrome (HIV/AIDS) and the sources of their information. MATERIALS AND METHODS: A cross-sectional survey was conducted in two high schools in Kirikkale, Turkey and data were collected by a self-administered questionnaire. Multi-stage sampling technique was used to obtain a representative sample. RESULTS: Four hundred and seventy three participants; 230 males and 243 females were analyzed. Their ages ranged from 15 to 19 years with a mean age of 16.81 ± 1.27. 92.2% of the students claimed to have heard about HIV/AIDS prior to the study with slightly more females than males. Although with some misconceptions, majority of the participants knew that HIV is not transmitted by sharing meals, casual contact, and sleeping in the same room and using the same bathroom. 93.4% identified HIV/AIDS as a life-threatening disease and 27% believe that there is a cure for AIDS. 64% and 22.8% respectively believed that the people can protect themselves by using condoms and by avoiding sexual contact. Internet was preponderantly claimed as the most important source of information about HIV/AIDS. CONCLUSION: Empirical evidence from this study suggests that the students have a fairly high knowledge of HIV/AIDS. This is not without some misconceptions about the prognosis of the disease. Internet was the major source of HIV/AIDS information.

Unilateral fusion of mandibular permanent lateral incisor with canine: A report of a rare case.

Fusion is a developmental anomaly which occurs due to a union of one or more adjacent teeth during morpho-differentiation of the dental germs. Early diagnosis of this condition is important because it may cause clinical problems, such as esthetic concerns and arch asymmetry. These anomalies may be unilateral or bilateral and may affect either dentition, although the deciduous teeth are more commonly affected. This report describes a rare case of unilateral fusion between the mandibular permanent lateral incisors and the canine. Only few cases have been previously reported in the English literature. Hence this article aimed at reporting a case of this rare condition and evaluating the presence of any associated pathology.

Radiographic study of the prevalence of dens invaginatus in a sample set of Turkish dental patients.

AIM: The aim of this study was to determine the prevalence of dens invaginatus in a sample of Turkish dental patients. MATERIALS AND METHODS: The sample included 6, 912 panoramic radiographs from different Turkish dental patients. The ages of the patients ranged from 18 to 50 years. A tooth was considered having dens invaginatus if an infolding of a radiopaque ribbon-like structure equal in density to enamel was seen extending from the cingulum into the root canal. Maxillary and mandibular teeth were evaluated on panoramic radiographs to determine the type of dens invaginatus using Oehlers' classification. RESULTS: The overall incidence of patients with dens invaginatus was 0.17%. Dens invaginatus were detected in 15 teeth of a total of 192 150 teeth to give a tooth prevalence of 0.008%. Maxillary lateral incisors were most commonly affected teeth in the mouth (80% of cases), followed by maxillary canine teeth (20% of cases). The bilateral incidence of a symmetrical distribution was 25%. CONCLUSION: The occurrence of dens invaginatus among this Turkish population was rare. Attention should be paid to the presence of dens invaginatus and the treatment problems associated with it.