AI Article Synopsis
- The study examined how well single and double implant-supported crowns restore a missing molar with a wide mesiodistal length (MDL).
- FEA was used to analyze stress responses in different implant models under various loading conditions, revealing that single implants can place excessive stress on bone and prosthetic components with larger MDLs.
- Results indicated that double implant-supported crowns significantly reduce bone stress and improve stress transfer compared to single crowns when the MDL is 14 mm or greater.
Article Abstract
Purpose: Based on a self-controlled case, this study evaluated the finite element analysis (FEA) results of a single missing molar with wide mesiodistal length (MDL) restored by a single or double implant-supported crown.
Methods: A case of a missing bilateral mandibular first molar with wide MDL was restored using a single or double implant-supported crown. The implant survival and peri-implant bone were compared. FEA was conducted in coordination with the case using eight models with different MDLs (12, 13, 14, and 15 mm). Von Mises stress was calculated in the FEA to evaluate the biomechanical responses of the implants under increasing vertical and lateral loading, including the stress values of the implant, abutment, screw, crown, and cortical bone.
Results: The restorations on the left and right sides supported by double implants have been used for 6 and 12 years, respectively, and so far have shown excellent osseointegration radiographically.The von Mises stress calculated in the FEA showed that when the MDL was >14 mm, both the bone and prosthetic components bore more stress in the single implant-supported strategy. The strength was 188.62-201.37 MPa and 201.85-215.9 MPa when the MDL was 14 mm and 15 mm, respectively, which significantly exceeded the allowable yield stress (180 MPa).
Conclusions: Compared with the single implant-supported crown, the double implant-supported crown reduced peri-implant bone stress and produced a more appropriate stress transfer model at the implant-bone interface when the MDL of the single missing molar was ≥14 mm.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.2186/jpr.JPR_D_23_00278 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Comparative evaluation of pattern and distribution of stresses in single- and double-implant overdenture using ball-ring, positioner, and magnet-keeper attachment under different loading conditions: A finite element analysis.
J Indian Prosthodont Soc
January 2025
Department of Prosthodontics, K M Shah Dental College and Hospital, Sumandeep Vidyapeeth, Vadodara, Gujarat, India.
Aim: The aim is to evaluate and compare stress distribution characteristics of ball, magnet, and positioned attachment systems in single and double implant-retained overdentures using the finite element method (FEM).
Setting And Design: In vitro (in silico study) finite element analysis (FEA).
Materials And Methods: A Styrofoam mandible with duplicated silicon mucosa was used to construct a mandibular complete denture.
Metal framework reinforcement in implant overdenture fabricated with a digital workflow and the double milling technique: A dental technique.
J Prosthet Dent
November 2024
Associate Professor, School of Dentistry, National Taiwan University and National Taiwan University Hospital, Taipei, Taiwan, ROC. Electronic address:
An implant-supported overdenture is a cost-effective option that enhances both appearance and function. Advances in computer-aided design and computer-aided manufacturing (CAD-CAM) technology have simplified the procedures for denture fabrication, reducing time and costs while increasing patient satisfaction. However, fractures in overdentures are often caused by misalignment of the occlusal registration, excessive force, material wear, and insufficient space between the denture base and the attachment.
View Article and Find Full Text PDFInfluence of repeated implant-abutment manipulation on the prevalence of peri-implant diseases in complete arch restorations. A retrospective analysis.
Clin Implant Dent Relat Res
December 2024
Department of Oral Surgery and Implantology, Goethe University, Carolinum, Frankfurt, Germany.
Purpose: To evaluate the effects of repeated abutment manipulation on the prevalence of peri-implant diseases.
Materials And Methods: A total of 27 edentulous patients (n = 108 implants) immediately restored with double-crown retained implant-supported prostheses were identified for this retrospective study. The test included the one-abutment, one-time care concept (n = 18 patients, n = 72 implants, OAOT) and the control abutment replacement (n = 9 patients, n = 36 implants, AR).
Purpose: This study was designed to evaluate the influence of utilizing Polyetheretherketone (PEEK) coping and three different dental restorative materials in the success of tooth and implant-supported fixed partial dentures (TISFPD) in the maxillary posterior region, under static loading by 3-Dimensional Finite Element Analysis (3D FEA).
Materials And Methods: Six 3D FEA models were designed assuming the extraction of maxillary first and second molars. Bone, implant, abutment, PEEK coping, second premolar, periodontal ligament (PDL) and six 3-unit TISFPD with different restorative materials [Porcelain-Fused-to-Metal (PFM), PEEK-Composite (PC), Monolithic Zirconia (MZ)] were modeled.
Double crown removable partial denture for a patient with ectodermal dysplasia: A clinical report after 31 years.
J Prosthet Dent
October 2024
Professor, Department of Prosthodontics, Inje University Haeundae Paik Hospital, Busan, Republic of Korea. Electronic address:
This clinical report describes the prosthodontic management of a 5-year-old boy with ectodermal dysplasia who had been followed for 31 years. During the first 15 years, several interim removable overdentures were fabricated and modified according to his skeletal growth. At age 20, after the completion of jaw development, 4 endosseous dental implants were inserted in the mandible with a nerve repositioning procedure.
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!