Background and Aim: Non-surgical periodontal therapy plays a key role in the management of elements suffering furcation involvement. This study has the objective to compare the effectiveness between piezoelectric and magnetostrictive tools and the various tips in an arti- ficial model of multiradicular tooth. Methods: A plastic tooth, which perfectly mimics a first upper molar, was inserted into an experimental model. This model consisting of a container with silicone material inside, with the tooth covered from the apex to 2 mm from furcation roof configured to simulate a grade two furcation defect. The treating root area was covered with specific material to simulate the presence of calculus. Pictures were taken before and after instrumentation. The experimental procedure con- sists of ultrasonic roots cleaning in four groups (piezoelectric straight- tip, piezoelectric curved-tip, magnetostrictive straight-tip, magneto- strictive curved-tip) for a standardised time. For the vestibular, distal and medial surfaces 3000 and 1500 for the palatal surface. The instru- mentation operation was repeated 15 times for each group. The anal- ysis of the amount of calculus surface before and after treatment was performed by the analysis of the pictures using CAD software. Results: The validity of piezoelectric and magnetostrictive instrumen- tation in cleaning root surfaces is evident for both. All root surfaces covered were compared before and after instrumentation and were always statistically significant (p ≤ 0.001). It was possible to compare the piezoelectric and magnetostrictive instrumentation with the straight tips and the curved tips, and establish the best performance. The magnetostrictive instrumentation, in particular with the curved tip, reports significant values (p < 0.005). Conclusions: With the limitations of the preliminary in vitro study, we can conclude that modern ultrasonic instrumentation, both piezoelectric and magnetostrictive, is an excellent tool for the maintenance of multi- rooted teeth. Particularly the promising results of magnetostrictive ultra- sonic scaler with curved tips will be validated with in vivo studies.
In vitro comparative evaluation of piezoelectric and magnetostrictive ultrasonic instrumentation in the furcation area
Gronelli Gianmarco
;Bevilacqua Lorenzo;
2022-01-01
Abstract
Background and Aim: Non-surgical periodontal therapy plays a key role in the management of elements suffering furcation involvement. This study has the objective to compare the effectiveness between piezoelectric and magnetostrictive tools and the various tips in an arti- ficial model of multiradicular tooth. Methods: A plastic tooth, which perfectly mimics a first upper molar, was inserted into an experimental model. This model consisting of a container with silicone material inside, with the tooth covered from the apex to 2 mm from furcation roof configured to simulate a grade two furcation defect. The treating root area was covered with specific material to simulate the presence of calculus. Pictures were taken before and after instrumentation. The experimental procedure con- sists of ultrasonic roots cleaning in four groups (piezoelectric straight- tip, piezoelectric curved-tip, magnetostrictive straight-tip, magneto- strictive curved-tip) for a standardised time. For the vestibular, distal and medial surfaces 3000 and 1500 for the palatal surface. The instru- mentation operation was repeated 15 times for each group. The anal- ysis of the amount of calculus surface before and after treatment was performed by the analysis of the pictures using CAD software. Results: The validity of piezoelectric and magnetostrictive instrumen- tation in cleaning root surfaces is evident for both. All root surfaces covered were compared before and after instrumentation and were always statistically significant (p ≤ 0.001). It was possible to compare the piezoelectric and magnetostrictive instrumentation with the straight tips and the curved tips, and establish the best performance. The magnetostrictive instrumentation, in particular with the curved tip, reports significant values (p < 0.005). Conclusions: With the limitations of the preliminary in vitro study, we can conclude that modern ultrasonic instrumentation, both piezoelectric and magnetostrictive, is an excellent tool for the maintenance of multi- rooted teeth. Particularly the promising results of magnetostrictive ultra- sonic scaler with curved tips will be validated with in vivo studies.Pubblicazioni consigliate
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