Reciprocating instrumentation in a maxillary primary central incisor: A protocol tested in a 3D printed prototype.
Int J Paediatr Dent
; 29(1): 50-57, 2019 Jan.
Article
in En
| MEDLINE
| ID: mdl-30264472
ABSTRACT
BACKGROUND:
Efficient endodontic instrumentation of primary teeth is a challenge for paediatric dentists.AIM:
To evaluate biomechanical outcomes of endodontic instrumentation with a reciprocating system in a polymer-prototyped primary maxillary central incisor.DESIGN:
The specimen was systematically instrumented and micro-CT scanned before and after each file. The amount of debris, percentage of non-instrumented areas, removed dentin volume, and lower dentin thickness at specific points along the root canal were analyzed.RESULTS:
A 10% increase in removed dentin volume was observed when R40 was compared to R25 (14.5% vs 4.2%). When comparing R50 with R40, this increase was only 3.4% (17.9% vs 14.5%). In the root cervical third, there was substantial reduction in dentin thickness with R50 (48.8%), followed by R40 (39.5%) and R25 (18.6%). There was no difference between R25 and R40 in the removal of dentin at the apical third (15.8%), while R50 resulted in 39.8% reduction in dentin thickness. Percentage of non-instrumented areas were the same for all files. Accumulated debris with R40 and R50 was the same (0.19 mm³) while for R25 was 0.11 mm³.CONCLUSIONS:
The Reciproc® system was effective for instrumentation of a prototyped primary maxillary central incisor. The most suitable file for apical preparation was R40.Key words
Full text:
1
Collection:
01-internacional
Database:
MEDLINE
Main subject:
Tooth, Deciduous
/
Incisor
Limits:
Humans
Language:
En
Journal:
Int J Paediatr Dent
Journal subject:
ODONTOLOGIA
/
PEDIATRIA
Year:
2019
Document type:
Article
Affiliation country:
Brazil