Reciproc x biorace

DOS SANTOS, M; BUSQUIM, SSK; CUNHA, RS; FREIRE, LG. Micro-Computed Tomography Evaluation of the Preparation of Long-Oval Root Canals Comparing the Reciproc and BioRace Systems Root canals that have a longoval crosssec0on hinder the ac0on of rota0ng instruments, which cannot adapt to all extensions of the root canal walls. Newly developed singleﬁle systems claim to prepare any type of root canal with only one instrument. The purpose of the present study was to compare the prepara0on of longoval root canals with a single reciproca0ng system and a mul0pleﬁle rotary system using microcomputed tomography. Distal canals of thirty mandibular molars were selected and assigned into two groups (n=15): Reciproc 40 (VDW, Munich, Germany) and BioRace System (FKG Dentaire, La ChauxdeFonds, Switzerland). Teeth were scanned before and aTer prepara0on of the root canals by a SkyScan 1172 microcomputed tomography scanner at 11µm resolu0on. Morphometric varia0ons were measured by volume increases and by the remaining untreated canal surface area in the en0re canal and each third. Data was compared using the MannWhitney test. The Reciproc system was found to have the highest increase in volume when analyzing both the en0re canal and the apical third (p<0.5). In spite of that, it leT more untouched areas (p<0.001) in the cervical and middle thirds (18,14% and 21.82%) as compared to BioRace (8.14% and 11.35%). In conclusion, neither technique was able to completely prepare the longoval outline of root canals. The Reciproc system removed more tooth structure while Bio R ace leT fewer untouched den0n walls in the more oval thirds of the canal. PR 74 University of Sao Paulo/Brazil School of Den0stry Den0stry Science Postgraduate Program Area of Concentra0on: Endodon0cs 5mm CTAn: Region of Interest (A); Image Binarisa0on (B); Custom Processing Tool (C) Volume Increases Untreated Canal Surface Area Reciproc BioRace Root Canal Prepara0on Reciproc R40 BioRace BR0 a BR4 1 st Scan 2 n d S c a n Assessment of Morphometric VariaMons Volume Increases (CTAn) Untreated Surface Area (MatLab) Longoval Root Canal msantos@usp.br Supported by FAPESP – Process 11/509960

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Transcript of Reciproc x biorace

DOS SANTOS, M; BUSQUIM, SSK; CUNHA, RS; FREIRE, LG.

Micro-Computed Tomography Evaluation of the Preparation of Long-Oval Root Canals Comparing the Reciproc and BioRace Systems

Root canals that have a long-‐oval cross-‐sec0on hinder the ac0on of rota0ng instruments, which cannot adapt to all extensions of the root canal walls. Newly developed single-‐file systems claim to prepare any type of root canal with only one instrument. The purpose of the present study was to compare the prepara0on of long-‐oval root canals with a single reciproca0ng system and a mul0ple-‐file rotary system using micro-‐computed tomography. Distal canals of thirty mandibular molars were selected and assigned into two groups (n=15): Reciproc 40 (VDW, Munich, Germany) and BioRace System (FKG Dentaire, La Chaux-‐de-‐Fonds, Switzerland). Teeth were scanned before and aTer prepara0on of the root canals by a SkyScan 1172 micro-‐computed tomography scanner at 11µm resolu0on. Morphometric varia0ons were measured by volume increases and by the remaining untreated canal surface area in the en0re canal and each third. Data was compared using the Mann-‐Whitney test. The Reciproc system was found to have the highest increase in volume when analyzing both the en0re canal and the apical third (p<0.5). In spite of that, it leT more untouched areas (p<0.001) in the cervical and middle thirds (18,14% and 21.82%) as compared to BioRace (8.14% and 11.35%). In conclusion, neither technique was able to completely prepare the long-‐oval outline of root canals. The Reciproc system removed more tooth structure while BioRace leT fewer untouched den0n walls in the more oval thirds of the canal.

PR 74

University of Sao Paulo/Brazil -‐ School of Den0stry -‐ Den0stry Science Postgraduate Program Area of Concentra0on: Endodon0cs

5mm

CTAn: Region of Interest (A); Image Binarisa0on (B); Custom Processing Tool (C)

Volume Increases Untreated Canal Surface Area Reciproc BioRace

Root Canal Prepara0on

Reciproc R40 BioRace BR0 a BR4

1st Scan

2nd Scan!

Assessment of Morphometric VariaMons

Volume Increases (CTAn)

Untreated Surface Area (MatLab)