Publication: Effects of different professional hygiene instruments on root surface characteristics of human teeth : an in-vitro study
Abstract
Amaç: Bu in-vitro çalışmanın amacı, magnetostriktif ve piezoelektrik ultrasonikkazıyıcılar gibi yaygın olarak tercih edilen profesyonel temizlik aletlerinin lastik uç venaylon fırçalarla birlikte kullanıldıklarında, çekilmiş alt keser dişlerin kök yüzeyindeoluşturdukları aşınma ve pürüzlenme etkilerini araştırmaktır.Yöntem: İki aşamalı gerçekleştirilen bu çalışmaya 80 adet diş dahil edilmiştir. İlkaşamada dişler (n= 80), kullanılan ultrasonik kazıyıcının türüne (Ma=Magnetostriktif,Pi= Piezoelektrik), uygulanan güç seviyesine (O= Orta, T= Tam) ve uygulama açısına(0˚ ve 45˚) göre rastgele 8 gruba ayrılmıştır. İkinci aşamada, örnekler (n=40) kullanılancilalama aletine (naylon uçlu fırça veya lastik uç) göre 2 gruba ayrılmıştır. Aşınmadeğerini belirlemek için bir lazer tarayıcı kullanılmıştır. Yüzey pürüzlülüğü herörneğin yüzeyinde kontakt profilometre cihazıyla oluşturulmuştur. İstatikselanlamlılık p < 0,05 olarak belirlenmiştir.Bulgular: 0˚lik uygulama açısıyla, güç ayarı orta seviyeden tam seviyeyedeğiştirildiğinde test edilen her iki ultrasonik alet daha pürüzlü bir yüzey oluşturdu (p< 0,01). PiT0 gurubunda belirgin aşınma değerleri (0,82 ± 0,07 mm3) ve pürüzlenmedeğerleri (0,30 ± 0,01μm) gözlendi. Lastik uçla uygulanan cilalama işlemi naylon uçlufırçayla uygulanan cilalama işlemine göre 2 kat fazla aşınma değeri gösterirken dahapürüzsüz bir yüzey oluşturdu (p < 0,01).Sonuç: Ultrasonik kazıyıcıların uygulama parametrelerindeki değişim ile birliktekullanılan cilalama aletinin türü kök yüzeyinde belirgin değişikliklere yolaçabilmektedir.
Objectives: The aim of the present study is to compare the wear and roughness effectsof extensively used professional hygiene instruments, including magnetostrictive andpiezoelectric ultrasonic scalers together with rubber prophy cup and nylon bristle brushon the roots of extracted human mandibular incisor teeth.Methods: Eighty teeth were included in the study, which was performed in two stages.In the first stage, teeth (n=80) were randomly assigned into 8 groups according to theapplied scaler type (Ma = Magnetostrictive, Pi = Piezoelectric), power degree (M =Medium, F = Full) and angulation (0° and 45°). In the second stage, the specimens(n=40) were divided into 2 groups according to the applied polishing device (nylonbristle brush versus rubber prophy cup). A laser scanner device was used in order todetermine the amount of wear. The amount of surface roughness was executed on thesurface of each sample with a contact profilometer device. Statistical significance wasset as p < 0.05 level.Results: Both ultrasonic instruments tested in our study produced a rougher surfacewhen changing the power setting from medium to full level at 0° application angle (p< 0.01). The prominent wear (0.82 ± 0.07 mm3) and roughness values (0.30 ± 0.01 μm)were detected in the PiF0 group. Polishing performed with rubber prophy cuppresented almost two times greater wear value, as well as a smoother surface comparedto polishing accomplished with nylon bristle brush (p < 0.001).Conclusion: Variations in applying parameters of ultrasonic scalers and the type ofpolishing instrument may lead to significant diversities on root surface characteristics.
Objectives: The aim of the present study is to compare the wear and roughness effectsof extensively used professional hygiene instruments, including magnetostrictive andpiezoelectric ultrasonic scalers together with rubber prophy cup and nylon bristle brushon the roots of extracted human mandibular incisor teeth.Methods: Eighty teeth were included in the study, which was performed in two stages.In the first stage, teeth (n=80) were randomly assigned into 8 groups according to theapplied scaler type (Ma = Magnetostrictive, Pi = Piezoelectric), power degree (M =Medium, F = Full) and angulation (0° and 45°). In the second stage, the specimens(n=40) were divided into 2 groups according to the applied polishing device (nylonbristle brush versus rubber prophy cup). A laser scanner device was used in order todetermine the amount of wear. The amount of surface roughness was executed on thesurface of each sample with a contact profilometer device. Statistical significance wasset as p < 0.05 level.Results: Both ultrasonic instruments tested in our study produced a rougher surfacewhen changing the power setting from medium to full level at 0° application angle (p< 0.01). The prominent wear (0.82 ± 0.07 mm3) and roughness values (0.30 ± 0.01 μm)were detected in the PiF0 group. Polishing performed with rubber prophy cuppresented almost two times greater wear value, as well as a smoother surface comparedto polishing accomplished with nylon bristle brush (p < 0.001).Conclusion: Variations in applying parameters of ultrasonic scalers and the type ofpolishing instrument may lead to significant diversities on root surface characteristics.