Observation of the Bone Surrounding an Overloaded Implant in a Novel Rat Model

Nagasawa, Masako; Takano, Ryohei; Maeda, Takeyasu; Uoshima, Katsumi

doi:10.11607/jomi.2388

Cited by 40 publications

(42 citation statements)

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“…Dental implant-supported prostheses are successful in functional occlusal loading, but still jaw forces are borne ultimately by the supporting bone 7,8,16. Control of these forces by a well-designed occlusal scheme is an important parameter in treatment planning.…”

Section: Discussionmentioning

confidence: 99%

“…Nonetheless, one cause for failure can be occlusal overload 3,4. Human mastication, dietary habits and parafunctional loads are cyclic and multidirectional and of variable magnitudes 5–7. The posterior human bite force magnitude is about three times that of the anterior 7…”

Section: Introductionmentioning

confidence: 99%

“…Off-axial loads can be detrimental for a dental implant that is not embedded in an adequate thickness of cortical bone 7–9. To address an overload potential, it may be important to measure the maximal biting load a patient can generate.…”

Section: Introductionmentioning

confidence: 99%

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Bite force and dental implant treatment: a short review

Flanagan¹

2017

MDER

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Dental implants are placed endosseously, and the bone is the ultimate bearer of the occlusal load. Patients are not uniform in the maximum bite force they can generate. The occlusal biting load in the posterior jaw is usually about three times of that found in the anterior. It is possible for supporting implants to be overloaded by the patients’ biting force, resulting in bone loss and failure of the fixture. Bite force measurement may be an important parameter when planning dental implant treatment. Some patients can generate extreme biting loads that may cause a luxation of the fixture and subsequent loss of osseointegration. A patient with low biting force may be able to have a successful long-term outcome even with poor anatomical bone qualities. Patients with a high bite force capability may have an increased risk for late component fracture or implant failure. There is no correlation of any bite force value that would indicate any overload of a given implant in a given osseous site. Nonetheless, after bite force measurement, a qualitative judgement may be made by the clinician for the selection of an implant diameter and length and prosthetic design.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Bite force and dental implant treatment: a short review

Flanagan¹

2017

MDER

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“…Implant loss because of direct overloading reasons was described in in vivo [59] study with rats and in retrospective study [60]. In vivo based older studies detected that in case of bacterial peri-implant inflammation and overloading could accelerate bone loss [61].…”

Section: Discussionmentioning

confidence: 99%

The Prosthetic Influence and Biomechanics on Peri-Implant Strain: a Systematic Literature Review of Finite Element Studies

Maminskas¹,

Puišys²,

Kuoppala³

et al. 2016

JOMR

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ObjectivesTo systematically review risks of mechanical impact on peri-implant strain and prosthetic influence on stability across finite element studies.Material and MethodsAn online literature search was performed on MEDLINE and EMBASE databases published between 2011 and 2016. Following keywords tiered screening and selection of the title, abstract and full-text were performed. Studies of finite element analysis (FEA) were considered for inclusion that were written in English and revealed stress concentrations or strain at peri-implant bone level.ResultsThere were included 20 FEA studies in total. Data were organized according to the following topics: bone layers, type of bone, osseointegration level, bone level, design of implant, diameter and length of implant, implant-abutment connection, type of supra-construction, loading axis, measurement units. The stress or strain at implant-bone contact was measured over all studies and numerical values estimated. Risks of overloading were accented as non-axial loading, misfits, cantilevers and the stability of peri-implant bone was related with the usage of platform switch connection of abutment.ConclusionsPeri-implant area could be affected by non-axial loading, cantilever prosthetic elements, crown/implant ratio, type of implant-abutment connection, misfits, properties of restoration materials and antagonistic tooth. The heterogeneity of finite element analysis studies limits systematization of data. Results of these studies are comparable with other findings of in vitro, in vivo, prospective and retrospective studies.

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“…5 Bone has been demonstrated to be sensitive to loading conditions 6 and several authors consider occlusal load a critical factor influencing the dental implant healing phase and the long-term survival and success of dental implants. 7,8 Nagasawa et al 9 revealed the possibility of bone loss around overloaded implants in the absence of infection using a rat model. These results agree with previous studies realized on monkeys.…”

Section: Introductionmentioning

confidence: 99%

Effect of plaque accumulation and occlusal overload on peri-implant bone loss

et al. 2017

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This paper presents a case report where the influence of plaque accumulation and overload on a dental implant was observed. The patient presented crown loss on one implant affected by peri-implant bone resorption and gingival inflammation associated with poor oral hygiene. After 12 months a single crown was delivered, but as soon as the occlusal load was applied bone loss and implant failure occurred. In the present case report the dental implant remained stable as long as the implant was not loaded, although a 100% plaque index and bleeding on probing were present during the entire followup period. In contrast, as soon as an occlusal load was applied periimplant bone loss and implant failure occurred. These observations suggest that plaque accumulation alone is not a triggering factor for peri-implant bone loss and implant failure. On the contrary, occlusal load, when not properly controlled, might cause bone resorption.

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Observation of the Bone Surrounding an Overloaded Implant in a Novel Rat Model

Cited by 40 publications

References 0 publications

Bite force and dental implant treatment: a short review

Bite force and dental implant treatment: a short review

The Prosthetic Influence and Biomechanics on Peri-Implant Strain: a Systematic Literature Review of Finite Element Studies

Effect of plaque accumulation and occlusal overload on peri-implant bone loss

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