Randomized Clinical Trial Comparing Insertion Torque and Implant Stability of Two Different Implant Macrogeometries in the Initial Periods of Osseointegration

Gehrke, Sérgio Alexandre; Cortellari, Guillermo Castro; Fernandes, Gustavo Vicentis de Oliveira; Martins, Rafael Garcia; Cançado, Renata Moreira; Mesquita, Alfredo Mikail Melo

doi:10.3390/medicina59010168

Cited by 9 publications

(6 citation statements)

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“…Subsequently, Lekholm & ZARB (1985) proposed a classification aimed at quantifying the bone defects present in the alveolar ridge, as well as their quality. Regarding this last factor, the authors described four types of alveolar ridges, ranging from those that were totally corticalized to those where there was a predominance of medullary bone, as follows: Type A, virtually intact alveolar ridge; Type & MEREDITH, 1998;NEDIR et al, 2004;NOGUEROL et al, 2006;DILEK et al, 2008;CHO et al, 2009;SEONG et al, 2009;GEHRKE et al, 2019;DI STEFANO et al, 2019;ATIEH et al, 2021;ELIAS & SOARES 2021;GEHRKE et al, 2023). In relation to implants, primary stability depends on different macrogeometric characteristics, in the composition and treatment of their surface, and one or more of these characteristics increase the biological response of the tissue on the implant surface, leading to an increase in the success or survival rate (MEREDITH, 1998;SANTOS et al, 2013;PONZONI et al, 2018;DI STEFANO et al, 2021;ELIAS & SOARES, 2021;GEHRKE et al, 2023).…”

Section: Alveolar Atrophiesmentioning

confidence: 99%

“…As a result of bone remodeling and biological fixation in the BIC, there is a process of osseointegration, establishing secondary stability. Therefore, the factors related to implant stability are bone quality and quantity, surgical technique, and bioengineering, which can influence the implant activation time for each individual situation (LIAJE et al, 2012;BALDI et al, 2018;DI STEFANO et al, 2021;MELLO-MACHADO, 2021;ELIAS & SOARES 2021;GEHRKE et al, 2023).…”

Section: Health Of Tomorrow: Innovations and Academic Researchmentioning

confidence: 99%

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State of the art of techniques and instruments used to obtain primary stability in osseointegratable implants

Linhares,

Boechat Filho,

Heggendorn

2023

Health of Tomorrow: Innovations and Academic Research

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The drills used in the osseodensification (OD) technique have a short clinical and scientific history, with little information in the literature regarding the actual bone compaction achieved, in relation to the different designers and methodologies of each system. Objective. This integrative literature review aimed to discuss the state of the art of techniques and instruments used to obtain primary stability in osseointegrated implants. Materials and methods. Patent applications and works were selected from the scientific research bases of Scielo, Pubmed, lilacs, Google Scholar, Google patents and books, using the key words, in Portuguese and English: “primary stability”, “bone densification”, “osseodensification” and “bone implant contact”. Results. A total of seventy-seven articles were compiled, which had information on the techniques and instruments used to obtain primary stability in osseointegrable implant surgeries. Conclusion. Osseodensification suggested advantages over other bone densification techniques, such as ease of insertion of instruments and obtaining bone-implant contact with greater bone density. However, further studies are needed to enable longitudinal evaluations in order to verify the success of osseointegrated implants installed using this technique.

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Section: Alveolar Atrophiesmentioning

confidence: 99%

Section: Health Of Tomorrow: Innovations and Academic Researchmentioning

confidence: 99%

State of the art of techniques and instruments used to obtain primary stability in osseointegratable implants

Linhares,

Boechat Filho,

Heggendorn

2023

Health of Tomorrow: Innovations and Academic Research

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show abstract

“… 22 A randomized controlled trial by Gehrke et al to evaluate the influence of dental implant macro geometry on early stability found that modifications of implant macro geometry produced significant reduction in the insertion torque compared to conventional implant design. 23 Haseeb et al compared the implant stability and insertion torque of two different macro geometry in different bone densities and concluded that lower insertion torques of new implant types help in reducing failure. 24 Gandhi et al evaluated how two different implant designs responded to conventional osteotomy drilling and found that tapered pro implant design offered a better primary stability when osseodensification was used.…”

Section: Introductionmentioning

confidence: 99%

“Compression Necrosis” – A Cause of Concern for Early Implant Failure? Case Report and Review of Literature

Ramesh,

Sasi,

Mohamed

et al. 2024

CCIDE

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Purpose Compression necrosis refers to bone tissue damage that can occur when excessive pressure or force is applied to surrounding bone during implant placement. This pressure can compromise blood supply to the bone, leading to necrosis. Compression necrosis is a concern, because it can affect the stability and long-term success of dental implant. Patients and Methods This case report highlights a case of early bone loss and implant failure possibly due to compression necrosis. Clinical data, photographs, radiographs, blood examination report and histology were presented to document the early failure of an implant placed in the mandibular left posterior region of a 33-year-old female patient. Results Radiograph taken six weeks after implant placement showed severe angular defect. Therefore, the implant was surgically removed. Histological examination of the area showed bony trabeculae with an absence of osteoblastic riming, suggestive of necrotic bone. Conclusion Using excessive torque values when placing implants in dense bones can increase the risk of implant failure due to bone over compression. Dental professionals must follow the manufacturer’s instructions and employ quality surgical techniques during implant placement into dense cortical bone to minimise risks.

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“…Several factors are related to the increase in temperature during the osteotomy, such as drilling depth, drill design and sharpening, bone density, drilling speed, manual pressure applied, intermittent or continuous movements, and irrigation 14 – 17 . Gehrke et al 17 recently showed that bone healing is directly related to the trauma generated during the osteotomy and implant insertion torque 18 , 19 . The maintenance of adequate temperature levels can be achieved mainly with irrigation.…”

Section: Introductionmentioning

confidence: 99%

New strategy for osseodensification during osteotomy in low-density bone: an in vitro experimental study

Bettach

Boukhris²,

Aza

et al. 2023

Sci Rep

Self Cite

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The goal of this in vitro study was to evaluate and propose a new strategy for osseodensification technique using a drill counterclockwise to densification of bone of low density. Synthetic bone blocks of two different low densities (type III and IV) were used for the tests. The conventional drilling group (CD group) used Turbo-drill in a clockwise direction, and the osseodensification group (OD group) applied Turbo-drill in a counterclockwise direction. The applied tests were: (i) measurement of the temperature variation (ΔT) and (ii) measurement of the torque during the osteotomies, comparing the new strategy with the conventional drilling. Both groups were tested without (condition c1) and with (condition c2) irrigation, generating four subgroups: CDc1, CDc2, ODc1, and ODc2. Twenty osteotomies were made for each subgroup with a thermocouple positioned intra-bone (1 mm distant from the osteotomy) to measure the temperature produced. Other 20 samples/group were used to measure the torque value during each osteotomy in both synthetic bone density blocks. The mean of the ΔT during the osteotomies in type III bone was: 6.8 ± 1.26 °C for the CDc1 group, 9.5 ± 1.84 °C for the ODc1, 1.5 ± 1.35 °C for the CDc2, and 4.5 ± 1.43 °C for ODc2. Whereas, in the type IV bone, the ΔT was: 5.2 ± 1.30 °C for the CDc1 group, 7.0 ± 1.99 °C for the ODc1, 0.9 ± 1.05 °C for the CDc2, and 2.7 ± 1.30 °C for ODc2. The maximum torque during the osteotomies was: 8.8 ± 0.97 Ncm for CD samples and 11.6 ± 1.08 Ncm for OD samples in the type III bone; and 5.9 ± 0.99 Ncm for CD samples and 9.6 ± 1.29 Ncm for OD samples in the type IV bone. Statistical differences between the groups were detected in tests and conditions analyzed (p < 0.05). Using the drill counterclockwise for osseodensification in low-density bone generated a significantly greater torque of a drill than in CD and temperature variation during osteotomies. However, the temperature range displayed by the OD group was below critical levels that can cause damage to bone tissue.

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Randomized Clinical Trial Comparing Insertion Torque and Implant Stability of Two Different Implant Macrogeometries in the Initial Periods of Osseointegration

Cited by 9 publications

References 50 publications

State of the art of techniques and instruments used to obtain primary stability in osseointegratable implants

State of the art of techniques and instruments used to obtain primary stability in osseointegratable implants

“Compression Necrosis” – A Cause of Concern for Early Implant Failure? Case Report and Review of Literature

New strategy for osseodensification during osteotomy in low-density bone: an in vitro experimental study

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