Causes for tooth surface loss in a group of Jordanian population

Aim of this study was to determine the causes for tooth surface loss in a group of adult Jordanian population. Three hundred and six patients aged 29-59 years who came to the out-patient clinics of King Hussein Medical Center over a period of two months were examined for tooth surface loss [TSL]. Data were collected by taking general medical and dental history and by examining the teeth. Evidence of tooth surface loss [TSL] were recorded and analyzed. Data analysis included descriptive statistics of etiology, location and distribution of tooth surface loss in Jordanian population aged between 29-59 years. The study groups were composed of 142 [46.4%] males between 29-58 years [SD +/- 9.4] and 164 [53.6%] females aged between 29-59 years [SD +/- 7.9] with a mean age of 38 were examined. Data showed that out of the 306 subjects interviewed, 245 [80%] subjects showed clinical evidence of TSL. Table 2 shows a detailed description of the chief complaints of the patients 46. [15%] came as emergency patients, 94 [29.4%] came for fillings periodontal treatment and for scaling. 47 [15.4%] required extractions of teeth, 35 [12.4%] needed surface fixed and removable prosthodontics. 65 [21.2%] wanted esthetic treatment for anterior teeth, 27 [8.8%] required endodontic treatment and 73 [23.9%] wanted routine checkup

relationship between dental anxiety and reported dental treatment experience in children aged 11 to 14 years

The aim of the study was to determine the influence of reported dental experience on dental anxiety in children aged 11-14 years in Liverpool, United Kingdom. A total 366 children completed a two-part questionnaire. The first part invited the children to record which dental procedures they had experienced. These procedures were the same as those included in the Modified Child Dental Anxiety Scale, which formed the second part of the questionnaire. The scale consisted of eight questions, which invited the children to rate their anxiety about a variety of dental procedures, including going to the dentist in general, a dental examination, a scale and polish, local anaesthesia, dental restoration, dental extraction, dental treatment under general anaesthesia and dental treatment under inhalation sedation. The Modified Child Dental Anxiety Scale allowed the children to report on a five point Likert scale about how relaxed or worried they were for each of these scenarios. Cross-tabulation and t-tests were used to determine the relationship between dental anxiety and reported dental experience. The significance level for the study was set at p<0.05. Females were found to have significantly higher [p<0.05] mean anxiety score [21.87] than males [18.90]. Children were significantly less anxious about specific items of dental treatment if they had experienced that particular form of treatment. In the study group of 366 children, 232 [63.4%] reported that they had experienced a dental filling had a mean anxiety score of 2.23, 105 [28.7%] children reported that they had not experienced a dental filling had a mean value for the dental filling item of 2.70. Females were found to be statistically more dentally anxious than males. Children who reported that they had experienced dental treatment and visited the dentist more frequently were significantly less anxious than those who reported infrequent visits

Tensile peel failure of resin-bonded Ni/Cr beams: an experimental study

To measure the tensile peel strength of different types of luting cements and studies their effect on the adhesive bond quality of resin-bonded bridges. Six cements were investigated; two chemically adhesive resin cements [Super-Bond C and B and Panavia 21], one compomer cement [Dyract Cem], two resin-modified glass ionomer cements [Fuji Plus and RelyX Luting], and one conventional glass ionomer cement [Ketac Cem]. The tensile peel strength was investigated by bonding grit-blasted Ni/Cr alloy beams to a block of the same alloy using the different types of luting cements [n = 20 for each cement], leaving half the length of the beam free. Beams were pulled off the block with a peeling action by applying a tensile load to the free end of the beam and load at which failure occurs was recorded. All the fractured surfaces of the tested samples were examined under a stereo zoom microscope. Data were analyzed using one-way analysis of variance [ANOVA], which showed significant differences between the mean tensile peel strength of the cements [P < 0.05]. Tukey's pairwise comparisons showed that the mean tensile peel strength [in Newton] of Super-Bond [7.7] was significantly greater than Panavia 21 [6.1] as well as all other luting cements. Ketac Cem gave the lowest value of TPS [2.4]. The mode of failure for all the tested cements was cohesive in nature. Adhesive resin cements have the highest tensile peel strength which may explain their good clinical performance in resin-bonded bridges compared to other luting cements