Variations in habitual bone strains in vivo: Long bone versus mandible

Jong, W.C. de; Korfage, J.A.M.; Langenbach, G.E.J.

doi:10.1016/j.jsb.2010.06.013

Cited by 14 publications

(8 citation statements)

References 37 publications

(36 reference statements)

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“…Studies conducted to date, in the rabbit tibia, have limited their evaluation to the cortical bone structure. 19 However, our implants were not subjected to masticatory loads, which may be considered a limitation of the study. Further studies, which take the influence of functional load into account, are needed.…”

Section: Discussionmentioning

confidence: 99%

Histomorphometric Assessment of the Influence of Low-Level Laser Therapy on Peri-Implant Tissue Healing in the Rabbit Mandible

Massotti

Gomes

Mayer

et al. 2015

Photomedicine and Laser Surgery

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Objective: The purpose of this study was to demonstrate the effect of low-level laser therapy (LLLT) on the peri-implant bone healing process in the rabbit mandible. Background data: LLLT has been shown to accelerate tissue repair and osseointegration of implants placed into the rabbit tibia. However, the beneficial effects of LLLT have never been tested in the rabbit mandible, which would more closely mimic the human situation. Materials and methods: Twenty-four male New Zealand rabbits were randomly divided into four groups of six animals each. All animals had their left mandibular incisors extracted, followed by immediate insertion of a titanium dental implant in the fresh socket. Three groups received LLLT [aluminum-galliumarsenide (AlGaAs), k = 830nm, 50 mW, continuous wave (CW)] at three different energy densities per treatment session (E-5, 5 J/cm 2 ; E-10, 10 J/cm 2 ; and E-20, 20 J/cm 2 ). Irradiation was performed every 48 h for 13 days, totaling seven sessions. One group received sham treatment (controls). Histological sections were obtained from each of the 24 mandibles dissected, without first decalcifying the specimens, and were stained with hematoxylin and eosin and Picrosirius red for histomorphometric evaluation. Bone-to-implant contact (BIC), bone formation area, and collagen fiber area were assessed by light microscopy. Results: Significant differences were found between group E-20 and all other groups ( p < 0.05). Histomorphometric evaluation showed significantly higher BIC and significantly more collagen fibers in group E-20. Conclusions: Photobiostimulation with LLLT at an energy density of 20 J/cm 2 per session had a significant positive effect on new bone formation around dental implants inserted in the rabbit mandible.

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Section: Discussionmentioning

confidence: 99%

Histomorphometric Assessment of the Influence of Low-Level Laser Therapy on Peri-Implant Tissue Healing in the Rabbit Mandible

Massotti

Gomes

Mayer

et al. 2015

Photomedicine and Laser Surgery

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show abstract

“…As for implant placement in fresh tooth extraction sockets, we chose this method of implant placement, rather than the tibia (which is the most common site reported in the literature), in order to provide the closest possible simulation of a clinical situation. This method is also more reliable, as the mandibular alveolar bone is subjected to different forces than the rabbit tibia 39 . The size of animals also enabled the collection of blood samples in volumes required for laboratory analysis.…”

Section: Discussionmentioning

confidence: 99%

Effect of Three Different Protocols of Low-Level Laser Therapy on Thyroid Hormone Production After Dental Implant Placement in an Experimental Rabbit Model

Weber

Mayer²,

Cenci³

et al. 2014

Photomedicine and Laser Surgery

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Objective: The purpose of this study was to assess the systemic effects of low-level laser therapy (LLLT) on thyroid gland function and, consequently, calcium regulation -as measured by serum triiodothyronine (T3), thyroxine (T4), and free calcium levels -when administered after dental implant placement in a rabbit model. Background data: Protocols for the use of laser therapy in several clinical procedures are currently under investigation, as not all of the actions and systemic effects of laser irradiation have been clearly established. Materials and methods: Forty male adult New Zealand rabbits were distributed across five groups of eight animals each: two control groups (C-I and C-II) of unirradiated animals, and three experimental groups (E-5, E-10, and E-20), each exposed to a distinct dose of gallium-aluminum-arsenide (GaAlAs) laser [k = 830 nm, 50 mW, continuous wave (CW)] every 48 h for a total of seven sessions. The total dose per session was 5 J/cm 2 in E-5, 10 J/cm 2 in E-10, and 20 J/cm 2 in E-20. Animals in C-II and all experimental groups underwent surgical extraction of the mandibular left incisor followed by immediate placement of an osseointegrated implant (Nanotite Ò , Biomet 3i TM ) into the socket. Animals in group C-I served as an absolute control for T3, T4, and calcium measurements. The level of significance was set at 5% ( p £ 0.05). Results: ANOVA with Tukey's posthoc test revealed significant differences in T3 and calcium levels among experimental groups, as well as significant within-group differences in T3, T4, and calcium levels over time. Conclusions: Although not reaching abnormal values, LLLT applied to the mandible influenced thyroid function in this model.

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“…No entanto, nesta pesquisa, procurou-se simular as condições de instalação do implante após a extração dentária em mandíbula de coelhos. Esse método possibilitou maior confiabilidade, pois o osso mandibular alveolar sofre uma carga mastigatória diferente da carga sofrida pela tíbia de coelhos 34 . Dessa forma, buscou--se colocar os implantes nos alvéolos após extração dentária, pois é a condição mais próxima de uma situação clínica normal.…”

Section: Discussionunclassified

Metodologia para avaliação do efeito sistêmico e local da LLLT na osseointegração de implantes dentários em mandíbula de coelhos: nota prévia

Mayer¹,

Oliveira²,

Massotti³

et al. 2014

Rev. da Fac. de Odontologia, UPF

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Variations in habitual bone strains in vivo: Long bone versus mandible

Cited by 14 publications

References 37 publications

Histomorphometric Assessment of the Influence of Low-Level Laser Therapy on Peri-Implant Tissue Healing in the Rabbit Mandible

Histomorphometric Assessment of the Influence of Low-Level Laser Therapy on Peri-Implant Tissue Healing in the Rabbit Mandible

Effect of Three Different Protocols of Low-Level Laser Therapy on Thyroid Hormone Production After Dental Implant Placement in an Experimental Rabbit Model

Metodologia para avaliação do efeito sistêmico e local da LLLT na osseointegração de implantes dentários em mandíbula de coelhos: nota prévia

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