Micro-computed tomography of tooth tissue volume changes following endodontic procedures and post space preparation

Aim  To compare the volume of hard tooth tissue lost after caries removal, access cavity preparation, root canal preparation, fibre post space and cast post preparation in carious premolar teeth. The null hypothesis tested was that there is no difference between the volumes of hard tooth tissue lost...

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Bibliographic Details
Published in:International endodontic journal 2009-12, Vol.42 (12), p.1071-1076
Main Authors: Ikram, O. H., Patel, S., Sauro, S., Mannocci, F.
Format: Article
Language:English
Subjects:
Bicuspid - anatomy & histology
Bicuspid - diagnostic imaging
cast posts
Dental Caries - therapy
Dental Cavity Preparation
Dental Cementum - anatomy & histology
Dental Enamel - anatomy & histology
Dentin - anatomy & histology
dentine
Dentistry
fibre posts
Humans
Imaging, Three-Dimensional
Odontometry
Post and Core Technique
Root Canal Preparation
X-Ray Microtomography
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Summary:Aim  To compare the volume of hard tooth tissue lost after caries removal, access cavity preparation, root canal preparation, fibre post space and cast post preparation in carious premolar teeth. The null hypothesis tested was that there is no difference between the volumes of hard tooth tissue lost expressed as a percentage of the preoperative hard tooth tissue volume, after each operative procedure. Methodology  Twelve extracted human premolars with mesial or distal carious cavities penetrating into the pulp chamber were selected. Teeth were scanned using a microCT scanner. After each operative procedure the loss of hard tooth tissue volume was measured. The data were statistically analysed using one‐way analysis of variance and Fisher’s PLSD test with statistical significance set at α = 0.01. Results  The percentage of preoperative hard tooth tissue volume lost after caries removal was 8.3 ± 5.83, after access cavity preparation the loss of volume reached 12.7 ± 6.7% (increase of 4.4%). After root canal preparation, fibre post space and cast post preparation the hard tissue volume lost reached, 13.7 ± 6.7 (increase of 1%), 15.1 ± 6.3 (increase of 1.4%) and 19.2 ± 7.4 (increase of 4.1%) respectively. Each procedure performed after caries removal significantly increased (P 
ISSN:0143-2885
1365-2591
DOI:10.1111/j.1365-2591.2009.01632.x