Immediate implant placement in the maxillary aesthetic zone: A cone beam computed tomography study

Immediate implant placement in the maxillary aesthetic zone : A cone beam computed tomography study

This study aimed to investigate the factors that could be associated with the risk of labial cortical bone wall perforation with immediate implant placement (IIP) in the maxillary aesthetic zone, in a cone-beam computed tomography (CBCT) virtual study. CBCT exams from 126 qualified subjects (756 teeth) were included. Implants were virtually positioned in two different positions: in the long axis of the tooth (prosthetically-driven position) and in an ideal position in relation to adjacent anatomical structures (bone-driven position). Two different implant diameters were planned for each tooth position, namely, 3.75 and 4.3 mm for central incisors and canines, and 3.0 and 3.3 mm for lateral incisors. The incidence of perforation was nearly 80% and 5% for prostheticallyand bone-driven position, respectively. Factors associated with a higher risk of cortical bone wall perforation (bone-driven position), according to logistic regression analysis, were women, wider implants, Sagittal Root Position class IV, and decrease of the labial concavity angle. Perforation of the labial cortical bone wall can be greatly minimized when the implant is placed in a bone-driven position compared to a prosthetically-driven position. It is important to preoperatively evaluate the morphological features of the implant site for risk assessment and to individualize the treatment plan.

Lidén, AnnaMalmö universitet,Odontologiska fakulteten (OD) (author)
Machado, V. C.Slice Diagnóstico Volumétrico por Imagem, Belo Horizonte 30140-110, Brazil (author)
Chrcanovic, Bruno Ramos,DDS, MSc, PhDMalmö universitet,Odontologiska fakulteten (OD)(Swepub:mau)ac1808 (author)
Malmö universitetOdontologiska fakulteten (OD) (creator_code:org_t)

By the author/editor: Botermans, Anna; Lidén, Anna; Machado, V. C.; Chrcanovic, Brun ...

About the subject

MEDICAL AND HEALTH SCIENCES: MEDICAL AND HEAL ...; and Clinical Medicin ...; and Dentistry

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