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.

scholarly journals Comparison of Various Root Planing Instruments: Hand and Ultrasonic—Standard Smooth and Diamond Coated: An in vivo Study

2010 ◽  
Vol 1 (3) ◽  
pp. 149-157 ◽  
Author(s):  
Sushama R Galgali ◽  
NP Rajiv
Keyword(s):  
Statistical Significance ◽  
Root Surface ◽  
Electron Microscopic ◽  
Pocket Depth ◽  
Root Planing ◽  
Group A ◽  
Group B ◽  
Experimental Group ◽  
Scanning Electron

ABSTRACT Aim and objective This study was conducted to evaluate and compare the effectiveness of various root planing instruments, namely the curette, standard smooth ultrasonic tip and diamond coated ultrasonic tip under conditions of nonsurgical root debridement. Materials and methods A total of 20 incisors from 14 patients, with a pocket depth of 5 to 10 mm, indicated for extraction were selected for the study. Teeth selected were randomly assigned to one of the two groups, experimental group A and experimental group B. The proximal surfaces of teeth in experimental group A was instrumented with either Gracey curette or standard smooth ultrasonic tip and in experimental group B with either Gracey curette or diamond coated ultrasonic tip, randomly. Teeth were extracted without injuring the experimental area. The surface area under treatment was photographed at 10X and the percentage of residual calculus was evaluated. Teeth were processed for viewing under scanning electron microscope. Photomicrographs were graded for degree of cleanliness, Remaining Calculus Index (RCI) and Roughness and Loss of Tooth Substance Index (RLTSI) by an independent examiner. Results Percentage of residual calculus as evaluated using stereomicroscope did not show any statistical significance within the groups and among all the three instruments. Scanning electron microscopic assessment for the degree of cleanliness showed better cleanliness for curette compared to standard smooth ultrasonic tip. Remaining calculus was significantly higher for standard smooth ultrasonic tip compared to curette. Diamond coated ultrasonic tip showed greater roughness and loss of tooth substance. Conclusion Within the limits of this in vivo study, diamond coated ultrasonic tip removed a greater amount of root surface and created a rougher surface compared to the curette and standard smooth ultrasonic tip. The amount of root surface removed with diamond coated ultrasonic inserts suggests that they should be used with caution.

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