Cementum and dentin repair following root damage caused by the insertion of self-tapping and self-drilling miniscrews
| Autor: | Reihaneh Abrishamchi, Hooman Shafaee, Parya Heravi, Farzin Heravi, Majid Ghanbarzadeh, Hamid Ghanbarzadeh, Narges Ghazi |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2017 |
| Předmět: |
temporary anchorage devices
Dentistry Orthodontics Cementum Formation 03 medical and health sciences 0302 clinical medicine stomatognathic system Treatment plan Dentin Medicine Cementum Normal range business.industry Significant difference 030206 dentistry lcsh:RK1-715 stomatognathic diseases medicine.anatomical_structure Cold test lcsh:Dentistry Pulp (tooth) Original Article root resorption business 030217 neurology & neurosurgery |
| Zdroj: | Journal of Orthodontic Science Journal of Orthodontic Science, Vol 6, Iss 3, Pp 91-96 (2017) |
| ISSN: | 2278-0203 2278-1897 |
| Popis: | OBJECTIVE: The aim of this study was to evaluate the histological responses of cementum, root dentin, and pulp following intentional root injuries caused via self-tapping and self-drilling miniscrews. MATERIALS AND METHODS: Fourteen patients (with a mean age of 15.7 years and age range of 14–18 years) who were scheduled for the extraction of all four first premolars as part of their orthodontic treatment plan participated in this study. The roots of the right and the left quadrants' first premolars were designedly injured using self-tapping miniscrews and self-drilling miniscrews, respectively. Teeth were extracted eight weeks after the injury. Cementum repair was assessed through histological examinations. RESULTS: In this study, 40 teeth (75.4%) showed reparative cementum formation and 13 teeth (24.5%) showed no repair. There was no significant difference between the two groups regarding the formation of reparative cementum (P = 0.3). In all examined teeth, the inflammatory response of the pulp to the cold test was within the normal range. CONCLUSION: This study showed that in most cases, the healing of cementum was observed eight weeks after the injury and the two methods of miniscrew insertion showed no significant difference when it comes to the healing process. |
| Databáze: | OpenAIRE |
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