Survival of fixed implant-supported prostheses related to cantilever lengths

Shackleton, J; Carr, L. M.; Slabbert, J.C.G.; Becker, P. J.

doi:10.1016/0022-3913(94)90250-x

Cited by 128 publications

(86 citation statements)

References 6 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Proposed numerical findings confirm that a rehabilitative full-arch technique should be chosen and/or designed by bearing in mind that the loading transmission features and the risks of bone resporption activation are strongly affected by cantilever configurations, as well as by morphological and mechanical bone properties. In detail, in agreement with many clinical (Aparicio et al, 2001;Calandriello & Tomatis, 2005;Capelli et al, 2007;Del Fabbro et al, 2010;Krekmanov et al, 2000;Malò et al, 2005;Sertgöz & Güvener, 1996;Shackleton et al, 1994;Testori et al, 2008;White et al, 1994), photoelastic (Begg et al, 2009), and numerical (Bellini, 2009;Bonnet et al, 2009;Carvalho Silva et al, 2010;Zampelis et al, 2007) evidences, an higher distal cantilever length has been proved to induce higher and dangerous stress concentrations on bone, mainly at the distal peri-implant regions. Therefore, proposed results confirm that the biomechanical rationale related to the use of tilted distal implants is effective for reducing cantilever mechanisms and generally for inducing more favourable load transmission characteristics.…”

Section: Discussionsupporting

confidence: 52%

“…In light of previous considerations and since the presence of sinuses (in maxilla) and mental foramina (in mandible), nowadays full-arch restorations are mainly obtained by placing implants in the anterior region, generally resulting in the use of long cantilevered prostheses. As pointed out in several researches (e.g., Sertgöz & Güvener, 1996;Shackleton et al, 1994;White et al, 1994), high values of cantilever can be directly associated with high overloading risks. Overloads, generally induced by a shortcoming in load transfer mechanisms under functional forces, lead to possible high stress concentrations at the bone-implant interface, producing in turn possible physiologically-not-admissible strains that activate biological bone resorption (Carter et al, 1996;Guo, 2001;Irving, 1970).…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Stress Distribution on Edentulous Mandible and Maxilla Rehabilitated by Full-Arch Techniques: A Comparative 3D Finite-Element Approach

Vairo¹,

Pastore²,

Girolamo³

et al. 2011

Implant Dentistry - A Rapidly Evolving Practice

View full text Add to dashboard Cite

Section: Discussionsupporting

confidence: 52%

Section: Introductionmentioning

confidence: 99%

Stress Distribution on Edentulous Mandible and Maxilla Rehabilitated by Full-Arch Techniques: A Comparative 3D Finite-Element Approach

Vairo¹,

Pastore²,

Girolamo³

et al. 2011

Implant Dentistry - A Rapidly Evolving Practice

View full text Add to dashboard Cite

“…Several renowned authors 1,5,[7][8][9][10][11][12] have stated that to decrease the lever arm, the length of the cantilever in mandible should not exceed 20 mm. Others argue that the length of the cantilever should not exceed two times the width of a premolar.…”

Section: Discussionmentioning

confidence: 99%

Stress analysis on the free-end distal extension of an implant-supported mandibular complete denture

et al. 2009

View full text Add to dashboard Cite

A comparative and qualitative analysis of the tensions generated in the cantilever region of an implant-supported mandibular complete denture was conducted using the three-dimensional finite element method. The mechanical properties of the components were input in the model and a load of 15 N was applied in pre-determined points. In the first simulation, the load was applied on the occlusal surface of the first premolar. In the second simulation, it was applied on the first and second premolars. In the third simulation, it was applied on the first and second premolars and on the first molar. The different occlusion patterns produced similar tension distributions in the cantilever region, which followed a similar pattern in the three simulations. In all of the cases, the highest levels of tension were located in the region of the first implant. However, as the loads were dislocated distally, the tensions increased considerably. The more extensive the cantilever, the more compromised will be the infrastructure, the prosthetic components and the implants. Regardless of the length of the cantilever, the highest tensions will always be located in the region of the implant next to the load application point.

show abstract

“…extension restoration was suggested as an alternative method, but higher failure rate was recorded with longer distal extension area 3,4 . The placement of implant in maxillary tuberosity was suggested, but it can damage the maxillary artery.…”

mentioning

confidence: 99%

Study on the position of the posterior superior alveolar artery in relation to the performance of the maxillary sinus bone graft procedure in a Korean population

Park

Choi

Kim

2012

J Korean Assoc Oral Maxillofac Surg

View full text Add to dashboard Cite

(J Korean Assoc Oral Maxillofac Surg 2012;38:71-7) Objectives: This study sought to investigate the positioning of the posterior superior alveolar artery in relation to the performance of the maxillary sinus bone graft procedure in a Korean population. Materials and Methods: We identified the position of the posterior superior alveolar artery relative to 93 maxillary sinuses in 58 patients and determined the distance from the inferior border of the artery in the premolar and molar areas to the alveolar ridge and sinus floor. Results: The mean distance from the alveolar ridge to the posterior superior alveolar artery in the dentate group (20.62±3.05 mm in the premolar region, 17.50±2.84 mm in the molar region) was greater than as compared to the edentulous group (18.83±2.79 mm in the premolar region, 15.50±1.64 mm in the molar region), and this difference was statistically significant (P<0.05). In contrast, there was no statistically significant difference (P >0.05) between the mean distance from the sinus floor to the posterior superior alveolar artery in the dentate group (8.21±2.79 mm in the premolar region, 7.52±2.07 mm in the molar region) or in the edentulous group (7.75±3.31 mm in the premolar region, 7.97±2.31 mm in the molar region). Conclusion: Prior to surgery, it is important to evaluate the position of the posterior superior maxillary artery by using computed tomography scans. The premolar area is safer than the molar area for performing the maxillary sinus bone graft without bleeding.

show abstract

Survival of fixed implant-supported prostheses related to cantilever lengths

Cited by 128 publications

References 6 publications

Stress Distribution on Edentulous Mandible and Maxilla Rehabilitated by Full-Arch Techniques: A Comparative 3D Finite-Element Approach

Stress Distribution on Edentulous Mandible and Maxilla Rehabilitated by Full-Arch Techniques: A Comparative 3D Finite-Element Approach

Stress analysis on the free-end distal extension of an implant-supported mandibular complete denture

Study on the position of the posterior superior alveolar artery in relation to the performance of the maxillary sinus bone graft procedure in a Korean population

Contact Info

Product

Resources

About