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Dr. Lanis graduated from the University of Valparaiso, Chile in 2008 and completed a three-year residency program in Oral and Maxillofacial Implantology at the University of Chile in Santiago. Additionally, he has an advanced diploma in Marketing and Health Administration from University of Chile School of Business and an advanced certification in Medical Education from Catholic University of Chile School of Medicine. In 2013, he moved to Ann Arbor, Michigan to participate as an Implant Scholar in the Periodontics and Oral Medicine Department at University of Michigan School of Dentistry. During his career he has been specially dedicated to the practice of advanced prosthodontics, oral implantology and digital dentistry. Dr. Lanis is a recognized international lecturer in digital dentistry, oral implantology, esthetics and prosthodontics. He is fellow of the International Team for Implantology where he serves in the Global Education Committee and member of the European Association for Osseointegration, the International College of Prosthodontics and the American Academy of Cosmetic Dentistry. He has published several scientific articles in specialized journals and books and has collaborated as a scientific advisor with different dental implant companies worldwide.
International Journal of Periodontics & Restorative Dentistry, Pre-Print
DOI: 10.11607/prd.6826, PubMed-ID: 3819843710. Jan. 2024,Seiten: 1-27, Sprache: EnglischPeña-Cardelles, Juan Francisco / Markovic, Jovana / Alanezi, Ahmad / Hamilton, Adam / Gallucci, German O. / Lanis, Alejandro
Introduction: The interforaminal region is considered more favorable for implant placement than the posterior mandible in edentulous patients, mainly because of the interference of the inferior alveolar nerve with implant placement in the severely resorbed posterior mandible. However, complications in the interforaminal region may occur due to the presence of the mandibular incisive nerve. Objective: This scoping review aims to describe the mandibular incisive nerve anatomy related to the potential interference in implant therapy. Material and methods: A comprehensive literature search was conducted in the following databases: MEDLINE (via PubMed), Web of Science, and Scopus. This scoping review was structured according to the Joanna Briggs Institute method. Results: Thirteen studies were included in the review. All the studies were observational cohort anatomical studies, carried out mainly by CBCT and on cadavers. A total of 1471 patients/cadavers were studied. The mandibular incisive nerve was presented in 87-100% of the cases, with an average length of 9.97 mm and an average diameter of 1.97 mm. The mandibular incisive nerve may be damaged during drilling and implant placement, especially using implant lengths larger than 12 mm. Conclusions: Damage to the mandibular incisive nerve due to implant placement could be present, however, it is necessary to conduct more studies focusing on assessing mandibular incisive nerve damage to understand the clinical relevance of this nerve and its associated morbidities such as neurosensorial alterations. Due to the different anatomical characteristics of this nerve, CBCT analysis is recommended for implant therapy in the anterior mandible to prevent the described complications.
Introduction: Maxillary sinus floor augmentation is a procedure known for its long-term success and predictable outcomes. However, the perforation of the Schneiderian membrane remains the most common complication associated with this procedure. Objective: This systematic review aims to determine the presence of complications during maxillary sinus floor augmentation procedures using CAD-CAM surgical templates. Material and methods: An electronic search was carried out in MEDLINE (via PubMed), Web of Science, and Scopus. A descriptive analysis of the data was performed. Studies that have performed lateral sinus floor augmentation were included in the inclusion criteria. The CAD-CAM surgical template design and the intraoperative complications were registered. Results: A total of 13 studies were included. Seven were case reports, four were case series, and two were randomized clinical trials. A total of 94 lateral SFA procedures were included (84 using CADCAM templates and 10 without using templates). Three of the 84 maxillary sinus floor augmentation procedures using a CAD-CAM template presented intraoperative complications. Conclusions: Maxillary sinus floor augmentation performed by using CAD-CAM surgical templates could be related to low rates of complications, however, due to the heterogeneity of the articles included, more standardized studies are needed to confirm these outcomes.
Die computergestützte Implantatchirurgie gehört zu den Verfahren, die in den letzten Jahren stark an Popularität gewonnen haben. Die Menge an Informationen, die sich in der virtuellen Umgebung verarbeiten und berücksichtigen lässt, ermöglicht eine schnellere, sicherere und präzisere Implantatsetzung. In manchen Fällen sind für eine adäquate implantatgetragene Rehabilitation ergänzende chirurgische Maßnahmen nötig. Der vorliegende technische Bericht zeigt einen klinischen Fall, in dem die Operationsschablone für eine Knochenreduktion sowie eine „stapelbare” Implantatschablone digital konstruiert und 3-D-gedruckt wurden, die bei einer simultanen Kamm-Ostektomie und statisch geführte Implantatsetzung zum Einsatz kamen.
Schlagwörter: computer-assistierte, computergeführte, 3-D-Druck, Implantatchirurgie, Implantatsetzung, Knochenreduktion
The incorporation of virtual engineering into our profession and the digitalization of information are allowing us new perspectives and innovative alternatives for dental treatment modalities. The use of computer-guided implant-planning software allows the radiographic, prosthetic, surgical, and laboratory fields to be combined under a common virtual scenario, permitting complete virtual treatment planning. Different alternatives for the digital workflow have been described for computer-guided implant placement. In this article, we present a recommendation for selecting the appropriate digital workflow depending on the clinical situation to achieve precise computer-guided implant planning and a predictable treatment outcome.
Schlagwörter: computer-guided implant surgery, digital planning
Passive fit between prosthesis and implants or abutments is a significant factor in preventing mechanical and biologic failures of implant-supported prostheses. Therefore, impression techniques must transfer the 3D implant position as accurately as possible for a correct superstructure fabrication. A novel impression protocol that uses an individualized open tray design is proposed. It allows the clinician to splint the transfers between the copings, outside the impression area, and to the tray itself to create a rigid monoblock. Thus, distortions produced by the tear of impression material or by transfer abutments' micromovements during tray retrieval are limited and superstructure misfits are minimized. This technique is specifically recommended for long spanning or completely edentulous patients.
The incorporation of virtual engineering into dentistry and the digitization of information are providing new perspectives and innovative alternatives for dental treatment modalities. The use of digital surface scanners with surgical planning software allows for the combination of the radiographic, prosthetic, surgical, and laboratory fields under a common virtual scenario, permitting complete digital treatment planning. In this article, the authors present a clinical case in which a guided implant surgery was performed based on a complete digital surgical plan combining the information from a cone beam computed tomography scan and the virtual simulation obtained from the 3Shape TRIOS intraoral surface scanner. The information was imported to and combined in the 3Shape Implant Studio software for guided implant surgery planning. A surgical guide was obtained by a 3D printer, and the surgical procedure was done using the Biohorizons Guided Surgery Kit and its protocol.