The Effect of Implant Length and Diameter on Stress Distribution of Tooth-Implant and Implant Supported Fixed Prostheses: An In Vitro Finite Element Analysis Study
Abstract
The aim of this study is to evaluate the effectiveness of the implant diameter and length on force dissemination of tooth-implant and implant retained fixed restorations. A finite analysis model was used via a 3D simulation of a unilateral mandibular Kennedy Class I arch. Through thresholding the resultant assembly, a region of interest was selected from the computed tomography (CT) scan. Details of the diameter (D) and length (L) of implant were introduced. Ds used were 3.7, 4.7, and 5.7, while Ls used were 10, 11.5, and 13. The constant was the use of rigid connectors in both designs (implant-implant and implant-tooth fixed partial dentures [FPDs]) and the mesial implant (D 3.7 and L 11.5). Stress in cancellous bone around mesial abutment, which is the second premolar in tooth-implant FPD and mesial implant in the implant-implant FPD, revealed that the stress was significantly lower in tooth-implant FPD when compared with implant-implant FPD (21.1 ± 0.00 vs 46.1 ± 0.00, P < .001). Stress distribution in the bone around any implant depends on several factors such as diameter, length, and tooth-implant vs implant-implant support. The implant diameter was more significant for improved stress distribution than implant length. A moderate increase in the length of the implant consequently reduced stress.
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Preoperative orthodontic treatment can optimize interproximal spacing, align residual teeth, and establish and maintain normal maxillofacial horizontal and vertical relationships.
“Evidence suggests that preoperative orthodontic treatment can optimize interproximal spacing, align residual teeth, and establish and maintain normal maxillofacial horizontal and vertical relationships [13–15].”
From Implant-supported fixed prosthodontic treatment for ectodermal dysplasia: a case report (2026) · cites this paper as [15]
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- Authors
- Naguib, G. H., Hashem, A. B. H., Natto, Z. S., Abougazia, A. O., Mously, H. A., & Hamed, M. T.
- Affiliations
- King Abdulaziz University (SA)
- Research Institute of Ophthalmology (EG)
- Tufts University (US)
- Private Practice, Cairo, Egypt.
- Cairo University (EG)
- ORCID
- Venue
- Journal of Oral Implantology
- Published
- 2023-02
- Volume
- 49
- Issue
- 1
- Pages
- 46-54
- ISSN
- 0160-6972 (ISSN-L)
- 1548-1336
- OpenAlex
- W4200137742
- Cited by
- 15
- References
- 46
- Citations by year
- 2026: 2 · 2025: 3 · 2024: 8 · 2023: 2
- FWCI
- 2.55
- Type
- journal article
- Language
- en
- Open access
- closed
- Locations
- Journal of Oral Implantology (publishedVersion)
- PubMed (publishedVersion)
- Topics
- Health Sciences › Dentistry › Oral Surgery › Dental Implant Techniques and Outcomes
- Health Sciences › Dentistry › Orthodontics › Dental materials and restorations
- Health Sciences › Medicine › Surgery › Orthopaedic implants and arthroplasty
- Keywords
- dental implants, implant length, implant diameter, stress distribution, cancellous bone stress, rigid connectors
- MeSH terms
- Dental Stress Analysis, Denture, Partial, Fixed, Stress, Mechanical, Tomography, X-Ray Computed, Dental Implants, Dental Prosthesis, Implant-Supported, Finite Element Analysis
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