Evaluation of Pre-treatment with Low-speed Round Bur for Fractured Teeth Surfaces that are Left untreated after Traumatic Injuries Volume 8 - Issue 1

Yoshishige Yamada¹*, Yuichi Kimura², Mozamma^l Hosaain³ and Tatsuya Shibata⁴

• ¹Division of Operative Dentistry, Department of Conservative Dentistry, Ohu University School of Dentistry, Japan
• ²Division of Endodontics, Department of Conservative Dentistry, Ohu University School of Dentistry, Japan
• ³Department of Conservative Dentistry and Endodontics, Bangabandhu Sheikh Mujib Medical University, Faculty of Dentistry, Dhaka, Bangladesh
• ⁴Division of Dental Pharmacology, Department of Oral Medical Science, Ohu University School of Dentistry, Japan

Received: May 19, 2023;   Published: June 02, 2023

*Corresponding author: Yoshishige Yamada, Division of Operative Dentistry, Department of Conservative Dentistry, Ohu University School of Dentistry, 31-1 Misumido, Tomita-machi, Koriyama-city, Fukushima 963-8611, Japan

DOI: 10.32474/IPDOAJ.2023.08.000292

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It is not known whether cleaning with a bristle brush can completely remove debris from fractured surfaces in the case of fractured teeth are left untreated after traumatic injuries. Therefore, the present study investigated the necessity of pre-treatment with a low-speed round bur instead of cleaning with a bristle brush and compared the adhesive effect to tooth surfaces with several etching systems by microleakage test and scanning electron microscopic (SEM) observation. Both corners of the incisal edges of 60 extracted human permanent incisors were cut and applied organic debris artificially, then immersed in artificial saliva at 37°C for 7 days and divided into two groups: group A was treated with bristle brush and group B was treated by a stainless round bur. The specimens in each group were divided into five subgroups (subgroup 1: total-etching system, subgroups 2 and 3: two-step self-etching system, subgroups 4 and 5: one-step self-etching system). The tooth surface was then restored with composite resin. The teeth in each fractured area were evaluated leakage condition and gap formation by microleakage test and SEM observation. As a results, specimens in group A showed the presence of residual organic debris and microleakage in some cases and this group showed significantly more gap formation than group B. There were no significant differences between each subgroup in group A and group B respectively. In conclusion, removal of debris by a low-speed round bur along the fractured surfaces would be required in this case of a few days after injury.

Keywords: traumatic injury; residual organic debris; microleakage test; gap formation

Abstract| Introduction| Materials and Methods| Results| Discussion| Conflict of Interest| References |