Background: In the maxillary anterior region, differences in bone density along the drilling path can impact the accuracy of implant placement despite the use of a surgical guide. Hence, the aim of this in vitro study was to investigate the accuracy of implant placement using the over-preparation technique in different drilling environments in the maxillary anterior region.
Methods: Three experimental models (a, b, and c) were designed and fabricated to simulate the following drilling environments (n = 60 each): unhealed bone, less dense bone, and dense bone after tooth extraction. The models were subjected to implant cavity preparation and placement using the over-preparation technique (group OPT) and conventional surgical guide technique (group CGT). Differences between the actual positions and the planned positions of the implants were calculated.
Results: The deviations of the implants in the group OPT in Model a and Model b were significantly smaller than those in the group CGT (P < 0.05). Among the group OPT, Model c presented with the smallest deviation, followed by Model b and Model a (P < 0.05), and the CGT group showed the same trend.
Conclusions: In the maxillary anterior region, differences in bone density along the drilling path can adversely affect the accuracy of implant placement. These discrepancies can be significantly minimized using the over-preparation technique.
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http://dx.doi.org/10.1186/s12903-025-05546-w | DOI Listing |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC11773935 | PMC |
BMC Oral Health
January 2025
Department of Oral Implantology, The Affiliated Stomatological Hospital of Xuzhou Medical University, 130 Huaihai West Road, Xuzhou, 221003, PR China.
Background: In the maxillary anterior region, differences in bone density along the drilling path can impact the accuracy of implant placement despite the use of a surgical guide. Hence, the aim of this in vitro study was to investigate the accuracy of implant placement using the over-preparation technique in different drilling environments in the maxillary anterior region.
Methods: Three experimental models (a, b, and c) were designed and fabricated to simulate the following drilling environments (n = 60 each): unhealed bone, less dense bone, and dense bone after tooth extraction.
J Psychopharmacol
August 2024
Emory Center for Psychedelics and Spirituality, Emory University, Atlanta, GA, USA.
Objective: Despite considerable research examining the efficacy of psychedelic-assisted therapies (PATs) for treating psychiatric disorders, assessment of adverse events (AEs) in PAT research has lagged. Current AE reporting standards in PAT trials are poorly calibrated to features of PAT that distinguish it from other treatments, leaving many potential AEs unassessed.
Methods: A multidisciplinary working group of experts involved in PAT pooled formally and informally documented AEs observed through research experience and published literature.
Cureus
July 2024
Department of Oral and Maxillofacial Surgery, College of Dentistry, Hawler Medical University, Erbil, IRQ.
Objectives: The goal was to evaluate the effect of the combined growth factor of hyaluronic acid (HA) and advanced platelet-rich fibrin (A-PRF) on acceleration and maturation of bone formation around titanium dental implants in the bone-free space (jumping distance) of an over-preparation socket.
Materials And Methods: Thirty-two titanium dental implants were placed in four sheep and distributed into one control group (A) and three experimental groups (B, C, and D) in two different time periods. Each sheep received eight implants.
J Clin Med
March 2024
Functional Neurosurgery Division, Neurological Institute, Taichung Veterans General Hospital, Taichung 40705, Taiwan.
: Cervical disc arthroplasty (CDA) is currently used instead of fusion to preserve cervical spine motion. Cervical implant subsidence is a potential complication after CDA. : Radiological measurements were recorded via patient anteroposterior and lateral radiographs in the neutral position.
View Article and Find Full Text PDFJB JS Open Access
September 2022
Department of Orthopaedics and Sports Medicine, University of South Florida Morsani College of Medicine, Tampa, Florida.
Unlabelled: Glenoid baseplate failure is one of the causes of revision and poor outcomes in reverse shoulder arthroplasty (RSA). The objective of this study was to determine whether alterations in surgical technique can improve time-zero fixation of the baseplate in varying bone densities. A secondary objective was to identify whether preoperative radiographic glenoid sclerosis width was associated with the implementation of these techniques.
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