Microdamage adjacent to endosseous implants

Huja, Sarandeep S.; Katona, Thomas R.; Burr, David B.; Garetto, Lawrence P.; Roberts, W. Eugene

doi:10.1016/s8756-3282(99)00151-9

Cited by 76 publications

(63 citation statements)

References 15 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…It was expected that more microdamage would occur in the mandible because of its greater cortical thickness and higher mineralization. 29 Our data showed that MSI insertion in the mandible produces a larger number of cracks, but it did not induce greater crack length, crack density, or total microdamage burden. Although more cracks were created by the longer distance that the thread travels through the cortical bone, this suggests that pilot drilling can still effectively relieve the overcompression of cortical bone.…”

Section: Discussionmentioning

confidence: 48%

“…27 Another study using 1.0-mm diameter pilot drilling found that it significantly reduced microdamage even with the insertion of larger diameter (1.4-, 1.6-, and 2.0-mm) cylindrical MSIs. 28 While microdamage stimulates bone remodeling and induces a periodontal ligament (PDL)-like zone around conventional dental implants, [29][30][31][32] accumulated microdamage can weaken bone [33][34][35] and potentially jeopardize MSI stability. 17 To understand how pilot drilling and MSI taper affect primary stability, researchers inserted tapered and cylindrical MSIs perpendicular to artificial bone blocks and found similar maximum insertion torques with the same pilot drilling.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Microdamage generation by tapered and cylindrical mini-screw implants after pilot drilling

Taing-Watson

Katona

Stewart

et al. 2014

The Angle Orthodontist

View full text Add to dashboard Cite

Objective: To investigate the relationship between mini-screw implant (MSI) diameter (1.6 vs 2.0 mm) and shape (tapered vs cylindrical) and the amount of microdamage generated during insertion. Materials and Methods: Thirty-six cylindrical and 36 tapered MSIs, 6 mm long, were used in this study. Half of each shape was 1.6 mm in diameter, while the other half was 2.0 mm. After pilot drilling, four and five MSIs were inserted, respectively, into fresh cadaveric maxillae and mandibles of dogs. Bone blocks containing the MSIs were sectioned and ground parallel to the MSI axis. Epifluorescent microscopy was used to measure overall cortical thickness, crack length, and crack number adjacent to the MSI. Crack density and total microdamage burden per surface length were calculated. Three-way analysis of variance (ANOVA) was used to test the effects of jaw, and MSI shape and diameter. Pairwise comparisons were made to control the overall significance level at 5%. Results: The larger (2.0 vs 1.6 mm) cylindrical MSIs increased the numbers, lengths, and densities of microcracks, and the total microdamage burden. The same diameter cylindrical and tapered MSIs generated a similar number of cracks and crack lengths. More total microdamage burden was created by the 2.0-mm cylindrical than the 2.0-mm tapered MSIs. Although higher crack densities were produced by the insertion of 1.6-mm tapered MSIs, there was no difference in total microdamage burden induced by 1.6-mm tapered and 1.6-mm cylindrical MSIs. Conclusions: Pilot drilling is effective in reducing microdamage during insertion of tapered MSIs. To prevent excessive microdamage, large diameter and cylindrical MSIs should be avoided. (Angle Orthod. 2015;85:859-867.)

show abstract

Section: Discussionmentioning

confidence: 48%

Section: Introductionmentioning

confidence: 99%

Microdamage generation by tapered and cylindrical mini-screw implants after pilot drilling

Taing-Watson

Katona

Stewart

et al. 2014

The Angle Orthodontist

View full text Add to dashboard Cite

show abstract

“…Because the time of implant insertion is too short for bone to relax, the bone tissue might experience inelastic phenomena with the possibility of permanent elastic strains in periimplant bone (Duyck et al 2010;Natali et al 2009). Research has also supported the hypothesis that implant insertion may cause initiation of microcracks in peri-implant bone (Huja et al 1999;Warreth et al 2009). …”

Section: Discussionmentioning

confidence: 89%

Use of micro-CT-based finite element analysis to accurately quantify peri-implant bone strains: a validation in rat tibiae

Torcasio

Zhang

Oosterwyck

et al. 2011

Biomech Model Mechanobiol

View full text Add to dashboard Cite

Although research has been addressed at investigating the effect of specific loading regimes on bone response around the implant, a precise quantitative understanding of the local mechanical response close to the implant site is still lacking. This study was aimed at validating micro-CT-based finite element (µFE) models to assess tissue strains after implant placement in a rat tibia. Small implants were inserted at the medio-proximal site of 8 rat tibiae. The limbs were subjected to axial compression loading; strain close to the implant was measured by means of strain gauges. Specimen-specific µFE models were created and analyzed. For each specimen, 4 different models were created corresponding to different representations of the bone-implant interface: bone and implant were assumed fully osseointegrated (A); a low stiffness interface zone was assumed with thickness of 40 µm (B), 80 µm (C), and 160 µm (D). In all cases, measured and computational strains correlated highly (R 2 = 0.95, 0.92, 0.93, and 0.95 in A, B, C, and D, respectively). The averaged calculated strains were 1.69, 1.34, and 1.15 times higher than the measured strains for A, B, and C, respectively, and lower than the experimental strains for D (factor = 0.91). In conclusion, we demonstrated that specimen-specific FE analyses provide accurate estimates of peri-implant bone strains in the rat tibia loading model. Fur-

show abstract

“…Some scholars [16][17][18][19] believed that partial overpressure formed fissure, which led to osteoclasia and resorption. Research observed that there was a large number of fibrous tissue surrounding the neck of miniscrew under optical microscope in 600 g group.…”

Section: Discussionmentioning

confidence: 99%

Histological Study of Porous TiNi Alloy Miniscrew Immediate Load with Different Force Levels in a Beagle Dog

Liu

Zheng

2013

J. Hard Tissue Biology.

View full text Add to dashboard Cite

The purpose of this study was to compare the stability of porous TiNi alloy miniscrew implants with different force levels (0 g, 200 g, 400 g and 600 g) loaded immediately after placement. Using a randomized split-mouth design, we placed 16 miniscrews into 3 skeletally mature male beagle dogs. All the miniscrews were equally divided into 4 groups. The result showed that there was more fibrous tissue repair between the miniscrew-bone interfaces with the increase of the force levels. The 600 g load caused serious bone trabecular damage on the neck of miniscrew, whereas no significant effect on tissue around miniscrews has been apical. Not only was the miniscrew-bone interface completely mechanically integrated, but it also formed osteoid-like tissue. There was more fibrous healing, with the increasing of the force levels. Bone trabecular around the neck of the miniscrew destroyed, when the case of 600 g loaded.

show abstract

Microdamage adjacent to endosseous implants

Cited by 76 publications

References 15 publications

Microdamage generation by tapered and cylindrical mini-screw implants after pilot drilling

Microdamage generation by tapered and cylindrical mini-screw implants after pilot drilling

Use of micro-CT-based finite element analysis to accurately quantify peri-implant bone strains: a validation in rat tibiae

Histological Study of Porous TiNi Alloy Miniscrew Immediate Load with Different Force Levels in a Beagle Dog

Contact Info

Product

Resources

About