Influence of Narrow Titanium Dental Implant Diameter on Fatigue Behavior: A Comparison between Unitary and Splinted Implants

被引:1
作者
Terrats, Rodrigo Gonzalez [1 ]
Linares, Maria Bonnin [1 ]
Punset, Miquel [2 ,3 ,4 ,5 ]
Molmeneu, Meritxell [2 ,3 ,4 ,5 ]
Nart Molina, Jose [1 ]
Ruiz Magaz, Vanessa [1 ]
Albertini, Matteo [1 ]
Manero, Jose Maria [2 ,3 ,4 ,5 ]
Gil Mur, Javier [6 ]
机构
[1] Univ Int Catalunya, Sch Dent, Dept Periodontol, Carrer Josep Trueta S-N, Sant Cugat Del Valles 08195, Barcelona, Spain
[2] Univ Politecn Catalunya UPC, Dept Mat Sci & Engn, Biomat Biomech & Tissue Engn Grp BBT, Av Eduard Maristany 16, Barcelona 08019, Spain
[3] Tech Univ Catalonia UPC, Barcelona Res Ctr Multiscale Sci & Engn, Av Eduard Maristany 10-14, Barcelona 08019, Spain
[4] Inst Recerca San Joan de Deu IRSJD, Barcelona 08034, Spain
[5] Inst Salud Carlos II, CIBER Ctr Invest Biomed Red Bioingn Biomat & Nanom, Madrid 28029, Spain
[6] Univ Int Catalunya, Bioengn Inst Technol, Fac Med & Ciencias Salud, Sant Cugat Del Valles 08195, Barcelona, Spain
关键词
narrow dental implant (NDI); unitary implants; two-splinted implants; ISO; 14801; wohler S/N curves; SEM fractography; static and cyclic loading; maximum static fracture strength (Fmax); fatigue limit (LF); BONE; STRESSES; LENGTH; ALLOY;
D O I
10.3390/jcm13061632
中图分类号
R5 [内科学];
学科分类号
1002 ; 100201 ;
摘要
Background: Scientific literature lacks strong support for using narrow diameter implants (NDI) in high masticatory force areas, especially in molars. Implant splinting in cases of multiple missing teeth reduces lateral forces, improves force distribution, and minimizes stress on implants. However, no studies have evaluated the fatigue load resistance of unitary or splinted implants. Methods: This in vitro study compares five groups of new metal alloy implants, including unitary and splinted implants with varying diameters. Mechanical characterization was assessed using a BIONIX 370 testing machine (MTS, Minneapolis, MN, USA) according to ISO 14801. For each of the five study sample groups, (n = 5) specimens underwent monotonic uniaxial compression at break testing and (n = 15) cyclic loading to determine the maximum force (Fmax) and the fatigue life (LF) values. Scanning electron microscopy (SEM) was employed for the fractographic analysis of the fractured samples. Results: The Fmax values for unitary samples ranged from 196 N to 246 N, whereas the two-splinted samples displayed significantly higher values, ranging from 2439 N to 3796 N. Similarly, the LF values for unitary samples ranged from 118 N to 230 N, while the two-splinted samples exhibited notably higher values, ranging from 488 N to 759 N. Conclusions: The observed resistance difference between sample groups in terms of Fmax and LF may be due to variations in effective cross-sectional area, determined by implant diameter and number. Additionally, this disparity may indicate a potential stiffening effect resulting from the splinting process. These findings have significant implications for dental clinical practice, suggesting the potential use of splinted sets of small-sized NDI as replacements for posterior dentition (premolars and molars) in cases of alveolar bone ridge deficiencies.
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页数:12
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