Evidence map›Paper›PMID 40221683›Full record

ArticleBMC oral health2025

Biomechanical analysis of All-on-4 implant supported framework using different materials across various clinical practice.

Xiaoxuan Chen, Zhengyi Xu, Kuo Gai, Xibo Pei, Ruyi Li, Qianbing Wan

Abstract read
In one paragraph

Article in BMC oral health, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 7 papers.

0numbers the graph read from it
0cells of the map it votes in
7citing papers in PubMed
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

7 citing papers in PubMed.

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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

6 authors.

Xiaoxuan ChenState Key Laboratory of Oral Diseases & National Center for Stomatology & National Clinical Research Center for Oral Diseases & Department of Prosthodontics, Department of Dental Technology, West China Hospital of Stomatology, Sichuan University, No. 14, Section 3, South Peoples Road, Chengdu, 610041, Sichuan, China.
Zhengyi XuState Key Laboratory of Oral Diseases & National Center for Stomatology & National Clinical Research Center for Oral Diseases & Department of Prosthodontics, Department of Dental Technology, West China Hospital of Stomatology, Sichuan University, No. 14, Section 3, South Peoples Road, Chengdu, 610041, Sichuan, China.
Kuo GaiStomatology Hospital, School of Stomatology, Zhejiang Provincial Clinical Research Center for Oral Diseases, Key Laboratory of Oral Biomedical Research of Zhejiang Province, Engineering Research Center of Oral Biomaterials and Devices of Zhejiang Province, Zhejiang University School of Medicine, Cancer Center of Zhejiang University, Hangzhou, 310000, China.
Xibo PeiState Key Laboratory of Oral Diseases & National Center for Stomatology & National Clinical Research Center for Oral Diseases & Department of Prosthodontics, Department of Dental Technology, West China Hospital of Stomatology, Sichuan University, No. 14, Section 3, South Peoples Road, Chengdu, 610041, Sichuan, China.
Ruyi LiState Key Laboratory of Oral Diseases & National Center for Stomatology & National Clinical Research Center for Oral Diseases & Department of Prosthodontics, Department of Dental Technology, West China Hospital of Stomatology, Sichuan University, No. 14, Section 3, South Peoples Road, Chengdu, 610041, Sichuan, China. 13076012712@163.com.
Qianbing WanState Key Laboratory of Oral Diseases & National Center for Stomatology & National Clinical Research Center for Oral Diseases & Department of Prosthodontics, Department of Dental Technology, West China Hospital of Stomatology, Sichuan University, No. 14, Section 3, South Peoples Road, Chengdu, 610041, Sichuan, China. champion@scu.edu.cn.

Funding

National Key Research and Development Program of China 2022YFC2410103
6 · The paper itself

Abstract

backgroundWith the global aging trend, the number of edentulous individuals is steadily increasing. All-on-4 implant restoration can greatly recovery masticatory function in edentulous patients. This study aims to determine the effect of framework material and cantilever length on the stress distribution in All-on-4 implant components using three-dimensional finite element analysis, thereby providing clinicians with insights into the design of All-on-4 superstructures to improve patient outcomes.

methodsFive framework models with cantilever lengths of 0 mm, 3 mm, 6 mm, 9 mm, and 12 mm were established, with the cantilever material selected as either titanium (Ti) or polyetheretherketone (PEEK). The jawbone, implant, and framework models were then assembled, with four implants placed in the jawbone according to the classic All-on-4 design and connected to the framework via abutments. Finally, occlusal forces were applied to the framework. Finite element analysis was used to obtain the stress and strain distribution in the jawbones, as well as the stress distribution within the implants and the frameworks.

resultsOverall, the use of a PEEK framework demonstrated better stress distribution in the jawbone due to its elastic modulus, the maximum stress of which is 26% lower at most than Ti. Although PEEK frameworks showed lower stress overall, implant stress increased, particularly for cantilever lengths over 6 mm, reaching values up to 2.6 times higher than in titanium.

conclusionsCantilever length and framework material are interrelated factors that both influence the stress distribution in the All-on-4 system. A PEEK framework can serve as an alternative to titanium framework in short cantilever lengths (under 6 mm), offering slightly better mandibular protection. Titanium is preferable for lengths between 6 mm and 9 mm to reduce mechanical risk. Cantilever lengths exceeding 12 mm are discouraged due to increased stress.

trial registrationNot Applicable.

Indexed as

Dental ImplantsDental MaterialsDental Prosthesis DesignDental Prosthesis, Implant-SupportedBenzophenonesBiomechanical PhenomenaBite ForceDental Stress AnalysisFinite Element AnalysisHumansKetonesPolyethylene GlycolsPolymersStress, MechanicalTitaniumBenzophenonesDental ImplantsDental MaterialsKetonespolyetheretherketonePolyethylene GlycolsPolymersTitaniumAll-on-4Cantilever lengthFinite element analysisPolyetheretherketoneTitanium

Identifiers

PMID40221683
PMCPMC11992848

What OpenQuestion holds

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LicenceCC BY-NC-ND
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Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.