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Results for “Dentistry, Operative”

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PubMed1987

Effect of the use of rubber dam versus cotton rolls on marginal adaptation of composite resin fillings to acid-etched enamel.

The effect of the use of rubber dam and the use of cotton rolls on the marginal adaptation of composite resin fillings to acid-etched enamel was investigated in vivo. Each of 35 patients received one hybrid and one microfilled resin filling placed in front teeth under rubber dam and one hybrid and one microfilled resin filling placed with cotton rolls and saliva suction equipment as moisture control. Marginal adaptation was investigated, by means of SEM replica technique, 1 week and 1 year after insertion of the fillings. The similarity in marginal adaptation to the acid-etched margins of fillings made with or without rubber dam indicated that sufficient dryness in the supragingival area can be achieved under the conditions used in the present study. With both moisture control methods the hybrid resin fillings showed statistically significantly better marginal adaptation than the microfilled restorations, both after 1 week and after 1 year. The size and the volume of the marginal defects increased markedly for both filling materials at the 1-year examination compared with the 1-week registrations.

Adult↗
PubMed1992

Assessment of dental fear. A comparison of two psychometric instruments.

To analyze further dental fear and its presentation in dental patients, two psychometric instruments were distributed among 50 patients attending a dental emergency clinic (EMC) and 44 patients applying for treatment at a specialized dental fear clinic (FEC). The Dental Fear Survey (DFS) was compared with the Corah Dental Anxiety Scale (DAS). After separating the EMC patients into high- and low-fear individuals in accordance with DAS scores, analysis showed that DFS values also clearly distinguished between these groups and between the FEC group and EMC groups. The dental fear levels were in correspondence with previous results, and the correlation between the DAS and the DFS was high (r = 0.92). In contrast to the DFS avoidance and arousal dimensions, the difference between the mean item scores on the dental situation dimension was not significantly different between high-fear EMC and FEC individuals. This indicated that the evaluation and appraisal of the dental situation among high-fear EMC and FEC patients may have been corresponding, whereas the behavioral and physiologic effects were different. Thus, in spite of this similar appraisal of the dental situation, FEC patients were interpreted as showing a more phobic behavior, and this was better captured in the DFS than in the DAS.

Adult↗
PubMed1996

The teaching of all-ceramic restorations in Scandinavian dental schools: a survey.

The study was designed to survey the curricular requirements, types of clinical experience, and materials/ techniques used in teaching programs for all-ceramic restorations in Scandinavian dental schools. All 13 dental schools responded. Ten offered some clinical experience to pre-doctoral students, but only one required one all-ceramic restoration. The departments of fixed prosthodontics had the main teaching responsibility. All-ceramic crowns were taught at 9, veneers at 7, and inlays/onlays at 10 dental schools. A wide range of different teaching concepts, materials, and views on indications and contraindications was reported. It appears as if all-ceramic restorations are regarded as experimental by the teaching institutions, although the dental industry and some practitioners strongly recommend these types of restorations.

Ceramics↗
PubMed1999

Dental workplace exposure and effect on fertility.

OBJECTIVES: This study assessed occupational exposure in dental surgeries on the basis of the reported use of dental materials and techniques and applied waiting-time-to-pregnancy methodology to study fertility in relation to the occupational exposure. METHODS: Data were collected retrospectively using a self-administered postal questionnaire addressing the occupational and reproductive history of the participants. The study groups consisted of 558 female dental surgeons and 450 high school teachers that had given birth in Norway to at least 1 living child. The present study comprised data from a total of 1408 pregnancies. The effects of practicing dentistry and of the given workplace exposure on fertility were analyzed with the discrete proportional hazard regression method. RESULTS: Most of the female dental surgeons were using amalgam for fillings during the period they tried to conceive, and 1/3 placed more than 50 fillings a week. Tooth-colored fillings were in limited use. Prior to 75% of the pregnancies, the dental surgeons reported handling chloroform-based root canal sealers. Forty percent of the dental surgeons were daily exposed to disinfectants containing ethanol and benzene. No difference was found in fertility between the dental surgeons and the high school teachers. Exposure to mercury, chloroform, and benzene was not associated with decreased fertility, except for a possible effect of mercury in the last pregnancy of multiparous dental surgeons. CONCLUSIONS: Occupational exposures had no clear adverse effects on fertility among the female dental surgeons studied.

Dental Amalgam↗
PubMed1998

[Commercial outpatient-polyclinic dental care for the population].

The authors have analysed annual activity of the dental clinic. On the grounds of the analysis they have formulated principles that can help commercial dental services to become a highly effective part of general medical aid to population. The principles are: highly skilled surgical (periodontological), therapeutic, orthopaedic aid in cooperation and specialisation in accordance with generally adopted staff standards; complex of periodontological aid; modern medicines and filling materials. Statistical data on each dental manipulation requirement in the conditions of commercial dental clinic are provided.

Ambulatory Care↗
PubMed1998

Microscope-assisted precision (MAP) dentistry. A challenge for new knowledge.

The purpose of this paper is to acquaint the dentist with the learning needs associated with the use of microscope-assisted precision dentistry (MAP) and identify certain concepts that will assist in the education process. Although the learning curve is considered to be lengthy and often difficult, the authors believe that the clinical benefits of MAP dentistry are well worth the necessary effort to achieve a level of competency with this methodology.

Dentistry, Operative↗
PubMed1975

Practical considerations of a flexible course in a nonflexible curriculum.

In the context in which this course was conducted, i.e., flexibility within an otherwise rigid curriculum, and no deadlines, several conclusions can be drawn: 1. Students used considerably more time than when the course was traditionally structured. 2. Quality of performance in the preclinical laboratory was significantly better. 3. Students took longer to complete the laboratory requirements than didactic requirements. 4. Some reasonable deadlines are necessary. 5. Student and instructor attitudes favored flexibility.

Anatomy↗