Biomedical subjects

P E Teplitsky

Publications and source records attributed to P E Teplitsky.

15 recordsLinked to original sources

PubMed2003

Periapical health and treatment quality assessment of root-filled teeth in two Canadian populations.

AIM: The prevalence of apical periodontitis (AP) and the quality of root fillings and restorations were determined in two Canadian populations differing in avail-ability of endodontists. METHODOLOGY: Radiographs of first-time university patients aged 25-40 years in Toronto and Saskatoon were examined for missing teeth, presence and standard of root fillings, standard of restoration, and AP according to the Periapical Index. Patients with root-filled teeth were invited for clinical examination and interview to inspect the restorations, and to reveal the providers of endodontic treatment and reasons for extractions of missing teeth. Chi-square and independent t-tests interpreted at the 5% significance level were used to examine associations between the prevalence of AP in root-filled teeth and the standard of the root filling, restoration, and providers of treatment. RESULTS: Proportion of patients with root-filled teeth was significantly higher (P < 0.001) in Toronto than in Saskatoon (39 and 26%, respectively). Presence of AP about root-filled teeth (44% in Toronto, 51% in Saskatoon) was significantly associated with poor density (OR = 2.7) short (OR = 2.4) and long (OR = 2.8) root fillings, and with poor radiographic quality of the restoration (OR = 1.7) Prevalence of AP did not differ significantly between teeth treated by generalists and endodontists. CONCLUSIONS: The prevalence of AP in root-filled and untreated teeth was comparable to that reported in previous methodologically compatible studies. The quality of both the root filling and the restoration were found to impact on the periapical health of root-filled teeth, with the impact of the restoration being most critical when the quality of the root filling was adequate.

Adult↗

PubMed1992

Gutta percha removal utilizing GPX instrumentation.

Two studies were performed in order to test the efficiency of GPX rotary instrumentation in removing gutta percha from endodontically-treated extracted teeth. A pilot project compared GPX to gates glidden instrumentation, and then a GPX technique was performed on 60 obturated mesial canals of mandibular molars. Assessment of the technique included radiographic and microscopic analysis of remaining debris. Results indicated that the GPX is a useful adjunct in these retreatment procedures. The clinical technique and time involved in the use of the GPX are discussed.

Dental Cavity Preparation↗

PubMed1989

Endodontic access of all-ceramic crowns.

This study determines the effects of access opening on all-ceramic (Dicor) crowns. Forty-two extracted permanent teeth were selected to represent the various types of human teeth. Crown preparations were completed, polysulfide impressions made, and stone dies poured. The dies were forwarded to a commercial dental laboratory for fabrication of the restorations. The crowns were luted to the prepared teeth and endodontic access openings were completed by using established criteria for access preparation. The crowns were removed and examined by direct vision, transillumination, stereomicroscopy, and scanning electron microscopy. Two crowns fractured during access preparation, seven crowns exhibited craze lines, and 29 crowns exhibited chipping of the ceramic material adjacent to the access opening. There was no significant difference in the extent of chipping with diamond or carbide instrumentation. However, carbide instrumentation caused more fractures and craze lines than did diamond instrumentation.

Ceramics↗

PubMed1988

Electric pulp testing with examination gloves.

The electric pulp test (EPT) is a valuable diagnostic aid in assessing the vitality of the dental pulp; however, its use with the operator wearing examination gloves is controversial. In this study, 15 female and 15 male subjects had two different clinically sound teeth tested with an Analytic Technology digital electric pulp tester, both with and without latex examination gloves being worn by the operator. Statistically significant differences between EPT results for the same teeth with the operator's hands being gloved and ungloved were noted. However, the mean differences in EPT results were small and were thought to be diagnostically insignificant for clinical situations. As long as the patient "completes the circuit" by also holding the metallic handle of the electric pulp tester's probe, dentists can easily, reliably, and accurately use the EPT while wearing examination gloves.

Adult↗

PubMed1988