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Biomedical subjects

L P Vansan

Publications and source records attributed to L P Vansan.

9 recordsLinked to original sources
PubMed2006

Autogenous transplantation of teeth with complete root formation: two case reports.

AIM: Autotransplantation is an alternative treatment for replacing lost teeth when suitable donor teeth are available. This paper presents two cases of successful autogenous tooth transplantation. SUMMARY: Two third molars with complete root development were autogenously transplanted from their original sockets into new recipient sites on the same side of the mouth, one in the maxilla and one in the mandible. In both cases, the third molars were transplanted immediately after the first molar extractions. To provide better adaptation of the donor teeth, the recipient alveolar sites were remodelled using surgical burs. Semi-rigid splints were maintained for 45 and 15 days, respectively. Root canal treatment commenced one a week after transplantation and the canals were medicated with a calcium hydroxide paste before they were filled. Clinical and radiographic findings after 5 and 3 years of follow-up, respectively, are discussed in relation to the literature. KEY LEARNING POINTS: Autogenous transplantation of teeth with complete root formation may be considered as a viable treatment option to conventional prosthetic and implant rehabilitation for both therapeutic and economic reasons. Careful surgical and endodontic procedure, together with careful case selection may lead to satisfactory aesthetic and functional outcomes.

Adult↗
PubMed2003

Adhesion of a glass-ionomer root canal sealer to human dentine.

This in vitro study evaluated the effect of smear layer removal on adhesion to human dentine of Ketac-Endo, Grossman, and Sealer 26 root canal sealers. A total of 60 extracted human maxillary and mandibular molars with their crowns ground flat were used. The teeth were divided into two groups: Group 1, the dentine surface received no treatment; Group 2, EDTA-C was applied to the dentine surface for 5 min. Ten samples were tested for each sealer and each group. Adhesion was measured with a Universal Testing Machine. Sealer 26 showed greater adhesion both with and without smear layer (p < 0.01). Ketac-Endo and Grossman sealers were statistically equal, having the lowest values of adhesion. Application of EDTA-C did not alter the adhesion of Ketac-Endo and Grossman sealers. However, the use of EDTA-C increased the adhesion of Sealer 26. The epoxy resin-based root canal sealer (Sealer 26) adhered better to dentine prepared with and without EDTA-C than glass-ionomer-based sealers and the zinc oxide eugenol-based (Ketac-Endo and Grossman) sealers.

Adhesiveness↗
PubMed1997

Comparative in vitro study of apically extruded material after four different root canal Instrumentation techniques.

Forty newly extracted human upper central incisors were submitted to root canal instrumentation 1 mm from the apex using four different techniques: standard, step-preparation, crown-down, and ultrasound, with distilled and deionized water as the irrigating solution. The extrusion product was collected into a collecting device constructed for this purpose. Extrusion was calculated by the determination of the mass of extruded material. The step-preparation technique caused a larger amount of extrusion than the standard technique, which in turn caused greater extrusion than the crown-down and ultrasound techniques. All techniques used caused extrusion of material beyond the apical foramen.

Dental Leakage↗
PubMed1990

Effects of various irrigating solutions on the cleaning of the root canal with ultrasonic instrumentation.

The authors studied, in vitro, by light microscopy and by morphometric analysis, the cleaning capacity of Dakin's solution, water and Tergentol, when used as auxiliary solutions to ultrasonic instrumentation of root canals. After irrigation and instrumentation, 15 extracted human mandibular incisors, with a single root and with only one canal, were submitted to routine histological processing with serial 6-microns sections stained with hematoxylin and eosin. The results showed that Dakin's solution energized by ultrasound leaves root canals with less debris than Tergentol; water falls into an intermediate position. The apical third showed more debris than the middle third, and none of the irrigating solutions left the root canals free of debris.

Bicarbonates↗
PubMedDate not supplied

[Absorption capacity of different brands of paper points].

The absorption ability of paper points of different brands was assessed "in vitro". All points showed absorbing ability higher than 100 per center their own weight, but differences in moistening rate were detected among brands.

Absorption↗
PubMedDate not supplied

["In vitro" evaluation of the action of various cavity varnishes].

The authors studied in vitro the capacity of FORP-USP cavity varnishes, COPALAINE (Prodonto), COPALITE (H. J. Bosworth Co.), CAVITINE (SS WHITE) and UNIVERSAL (SS WHITE) to promote impermeabilization. The tests were done by the use of filter paper and the impermeabilization was measured by the Rhodamine B stain infiltration. The FORP-USP cavity varnishes Copalaine and Copalite were more effective in promoting impermeabilization.

Dental Cavity Lining↗