title: Miniscrew implant fracture and effects of such retained tip on dentin-pulp complex: a histological report.
abstract: Miniscrew implants provide an excellent orthodontic anchorage. Besides the clinical benefits, miniscrew implants cause minor discomforts and in certain instances poses problematic complications. Damage to the adjacent tooth structure is the most feared complication of miniscrew implant placement, while fracture of miniscrew implants is the rarest. Miniscrew fracture could occur either during its placement or during its removal. An unusual case report is presented of a miniscrew implant tip fracture following root contact while attempting to remove it. This report highlights the effect of such miniscrew implant fracture on the dentin-pulp complex. The present case is probably the first to give direct histological evidence in humans that a miniscrew fracture or a retained miniscrew implant tip along the dentin/cementum without obvious miniscrew implant penetration could elicit pulp changes. Therefore this case report emphasizes the fact that prior to placing miniscrew implant, clinicians should have acquired proper training and adequate skills in terms of MSI placement and management of fractured MSI.
authors.affiliation: Department of Orthodontics and Dentofacial Orthopedics, Ragas Dental College and Hospital, Uthandi, Chennai, India.
authors.forename: Valai Kasim Shakeel
authors.initials: VK
authors.lastname: Ahmed
authors.affiliation: Department of Orthodontics and Dentofacial Orthopedics, Ragas Dental College and Hospital, Uthandi, Chennai, India.
authors.forename: Nathamuni Rengarajan
authors.initials: NR
authors.lastname: Krishnaswamy
authors.affiliation: Department of Oral and Maxillofacial Pathology, Ragas Dental College and Hospital, Uthandi, Chennai, India.
authors.forename: Rooban
authors.identifier: http://orcid.org/0000-0002-4159-4576
authors.initials: R
authors.lastname: Thavarajah
mesh_terms: D000293:Adolescent; D001863:Bone Screws; D003739:Dental Cementum / Q000293:injuries* / Q000473:pathology; D015921:Dental Implants / Q000009:adverse effects*; D017267:Dental Prosthesis Design; D003782:Dental Pulp / Q000293:injuries* / Q000473:pathology; D019232:Dental Restoration Failure; D005260:Female; D006801:Humans; D014081:Tooth Extraction; D014092:Tooth Root / Q000293:injuries* / Q000473:pathology
chemical_list: D015921:Dental Implants
keywords: Miniscrew implant fracture; dentin-pulp complex; pulpal changes; vacuolization