scholarly journals Scanning electron microscopic and profilometric study of different sharpening stones

2006 ◽  
Vol 17 (3) ◽  
pp. 237-242 ◽  
Author(s):  
Roberto Antonio Andrade Acevedo ◽  
Ana Karina Veloso Cardozo ◽  
José Eduardo César Sampaio
Keyword(s):  
Root Surface ◽  
Scaling And Root Planing ◽  
Electron Microscopic ◽  
Periodontal Health ◽  
Cutting Angle ◽  
Root Planing ◽  
Scanning Electron Microscopic ◽  
Scanning Electron

Scaling and root planing contribute to the recovery of periodontal health. All periodontal instruments loose their fine cutting angle after use. To maintain this angle, correct sharpening is required using specifically designed stones. The characteristics of sharpening stones can be compared to the blade of the instruments and also transported to root surface during instrumentation. Root smoothness is related to the quality of the blade. Therefore, the purpose of this study was to evaluate the characteristics of 9 sharpening stones by scanning electron microscopic and profilometric analyses. Ceramic and Neumar stones were very fine and both may be recommended to maintain the sharpness of the instruments. Arkansas, Thompson and CE stones presented greater roughness with very regular and round particles, and are suitable for maintenance of the cutting angle. In addition, these stones may be indicated for the routine sharpening of the instruments that are partly dull. Oxide Aluminum, Carborundum and JON stones were the coarsest with large irregular particles and may be indicated for initial sharpening of totally dull instruments with completion of sharpening with finer stones.

scholarly journals Scanning electron microscopic analysis of the effect of CarisolvTM gel on periodontally compromised human root surfaces

2006 ◽  
Vol 17 (2) ◽  
pp. 110-116 ◽  
Author(s):  
Daniela Corrêa Grisi ◽  
Letícia Helena Theodoro ◽  
José Eduardo César Sampaio ◽  
Márcio Fernando de Moraes Grisi ◽  
Sérgio Luiz de Souza Salvador
Keyword(s):  
Topical Application ◽  
Smear Layer ◽  
Chemical Agent ◽  
Scaling And Root Planing ◽  
Electron Microscopic ◽  
Human Teeth ◽  
Direction Parallel ◽  
Root Planing ◽  
Root Surfaces ◽  
Scanning Electron

The aim of this study was to analyze, under scanning electron microscopy (SEM), the morphologic characteristics of root surfaces after application of CarisolvTM gel in association with scaling and root planing (SRP). Sixty periodontally compromised extracted human teeth were randomly assigned to 6 groups: 1) SRP alone; 2) passive topical application of CarisolvTM + SRP; 3) active topical application of CarisolvTM + SRP; 4) multiple applications of CarisolvTM + SRP; 5) SRP + 24% EDTA; 6) topical application of CarisolvTM + SRP + 24% EDTA. CarisolvTM gel was applied to root surfaces for 30 s, followed by scaling and root planing, consisting of 50 strokes with Gracey curettes in an apical-coronal direction, parallel to the long axis of the tooth. The only exception was group 4, in which the roots were instrumented until a smooth, hard and glass-like surface was achieved. All specimens were further analyzed by SEM. The results showed that the treatment with CarisolvTM caused significant changes in root surface morphology of periodontally compromised teeth only when the chemical agent was actively applied (burnishing technique). CarisolvTM failed to remove the smear layer completely, especially with a single application, independently of the method of application. Multiple applications of CarisolvTM were necessary to achieve a smear layer reduction comparable to that obtained with 24% EDTA conditioning.

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