The present clinical report describes the use of a photogrammetry system (PICcamera) for obtaining impressions and designing and producing an immediately loaded CAD/CAM provisional fixed prosthesis delivered in the mouth within 24 hours after implant placement in the maxilla. The stereo camera was used to capture the implant positions, automatically taking 350 images in less than 2 minutes. This photogrammetry system takes 10 pictures per second with a margin of error of under 10 μm between two scan bodies, and identifies the spatial position of each implant without physical contact. The three-dimensional data for each implant are registered in vector format, together with all interrelated implant angles and distances. The information is stored in an STL file (PICfile). Information on soft tissues was obtained from an irreversible hydrocolloid impression that was poured in stone and scanned. An immediately loaded screw-retained fixed prosthesis was made from acetalic resin using CAD/CAM, and its passive fit was evaluated in the mouth using the Sheffield test and screw resistance test.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1111/jopr.12364 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Long-term clinical study of fixed prosthetic rehabilitation using one-piece narrow-diameter implants: a retrospective study.
J Korean Assoc Oral Maxillofac Surg
December 2024
Department of Prosthodontics, Section of Dentistry, Seoul National University Bundang Hospital, Seongnam, Korea.
Article Synopsis
- The study aimed to assess the long-term outcomes of one-piece narrow-diameter implants (NDIs) and identify factors influencing marginal bone loss (MBL) around them.
- The analysis involved 25 patients and 40 NDIs over an average of 10.5 years, with a high survival rate of 95.1% for implants and a mean MBL of 0.44 mm, primarily linked to the use of guided bone regeneration (GBR).
- The findings suggest that NDIs perform well clinically over time, showing acceptable MBL, but further research with larger samples is recommended to confirm these results.
PLGA Conical Nail Fixation for Acetabular Chondrolabral Delamination in Femoroacetabular Impingement Promotes Cartilage and Labrum Regeneration in a Porcine Model.
Am J Sports Med
January 2025
Department of Sports Medicine, Peking University Third Hospital, Institute of Sports Medicine of Peking University, Beijing, China.
Article Synopsis
- Acetabular chondrolabral delamination (ACD) is a prevalent hip injury with few effective treatments; this study explored the use of PLGA conical nail fixation as a potential method.
- The experiment involved 24 pigs with surgically induced ACD, divided into three groups: a control (no treatment), an acute fixation group using PLGA nails, and a chronic fixation group using spacers before PLGA nails.
- Results indicated that the pigs in the acute fixation group showed significantly better cartilage regeneration and proteoglycan deposition compared to the control and chronic groups, suggesting PLGA nails are effective for treating ACD.
Design, characterisation, and clinical evaluation of a novel porous Ti-6Al-4V hemipelvic prosthesis based on Voronoi diagram.
Biomater Transl
September 2024
Orthopaedic Research Institute and Department of Orthopaedics, West China Hospital, Sichuan University, Chengdu, Sichuan Province, China.
Three-dimensional printed Ti-6Al-4V hemipelvic prosthesis has become a current popular method for pelvic defect reconstruction. This paper presents a novel biomimetic hemipelvic prosthesis design that utilises patient-specific anatomical data in conjunction with the Voronoi diagram algorithm. Unlike traditional design methods that rely on fixed, homogeneous unit cell, the Voronoi diagram enables to create imitation of trabecular structure (ITS).
View Article and Find Full Text PDFA technique to enhance the gingival esthetics of a prototype complete arch fixed implant-supported prototype prosthesis using a 3D printed gingival veneer.
J Prosthet Dent
December 2024
Clinical Professor and Program Director, University of Connecticut Health Center, Farmington, Conn.; and Private practice, Glastonbury, Conn. Electronic address:
An important step in the workflow for a complete arch fixed implant-supported prosthesis is the fabrication of a prototype resin prosthesis to allow the patient to visualize the definitive treatment outcome and also to use as an interim prosthesis. Producing a prototype prosthesis with the natural appearance of the gingival color and contour has been challenging. Current methods include painted stains, manually applied pink composite resin or autopolymerizing acrylic resin, and multicolored resin blocks, but these are all relatively expensive, have less than optimal esthetics, and are labor-intensive and time-consuming.
View Article and Find Full Text PDF3D-Printed Prosthesis with an Articular Interface for Anatomical Acetabular Reconstruction After Type I + II (+ III) Internal Hemipelvectomy: Clinical Outcomes and Finite Element Analysis.
J Bone Joint Surg Am
October 2024
Musculoskeletal Tumor Center, Department of Orthopedics, The Second Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou, Zhejiang, People's Republic of China.
Background: Pelvic reconstruction after type I + II (or type I + II + III) internal hemipelvectomy with extensive ilium removal is a great challenge. In an attempt to anatomically reconstruct the hip rotation center (HRC) and achieve a low mechanical failure rate, a custom-made, 3D-printed prosthesis with a porous articular interface was developed. The aim of this study was to investigate the clinical outcomes of patients treated with this prosthesis.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!