Bone tissue microarchitectural characteristics at dental implant sites part 2: correlation with bone classification and primary stability

Ribeiro-Rotta, Rejane Faria; Oliveira, Rubelisa Cândido Gomes de; Dias, Danilo Rocha; Lindh, Christina; Leles, Cláudio Rodrigues

doi:10.1111/clr.12046

Cited by 44 publications

(82 citation statements)

References 23 publications

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“…Therefore, for more objective evaluation, computed tomography Hounsfield unit (HU) can be utilized, but there is a problem on routinely applying this in clinical setting 27. In several studies on the relationship between bone quality and implant stability, it has been stated that bone quality is the most important factor affecting on primary stability of the implant 282930. Isoda et al reported that bone quality evaluation by using CBCT provides a very useful information for predicting implant primary stability 31.…”

Section: Discussionmentioning

confidence: 99%

“…However, it is clear that they are not accurate 1213. There have been many controversies regarding the accuracy of RFA, and many scholars have given negative opinions 1415. However, there have been many reports that RFA is effective in measuring implant primary stability and evaluation of healing process, and it is thought as the most effective method which can be clinically applied 1617…”

Section: Introductionmentioning

confidence: 99%

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Prospective randomized clinical trial of hydrophilic tapered implant placement at maxillary posterior area: 6 weeks and 12 weeks loading

et al. 2016

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PURPOSEEarly loading of implant can be determined by excellent primary stability and characteristic of implant surface. The implant system with recently improved surface can have load application 4-6 weeks after installing in maxilla and mandible. This study evaluated the effect of healing period to the stability of hydrophilic tapered-type implant at maxillary posterior area.MATERIALS AND METHODSThis study included 30 patients treated by hydrophilic tapered-type implants (total 41 implants at maxilla) and classified by two groups depending on healing period. Group 1 (11 patients, 15 implants) was a control group and the healing period was 12 weeks, and Group 2 (19 patients, 26 implants) was test group and the healing period was 6 weeks. Immediately after implant placement, at the first impression taking, implant stability was measured using Osstell Mentor. The patients also took periapical radiographs after restoration delivery, 12 months after restoration and final followup period. The marginal bone loss around the implants was measured using the periapical radiographs.RESULTSAll implants were survived and success rate was 97.56%. The marginal bone loss was less than 1mm after 1 year postoperatively except the one implant. The stabilities of the implants were not correlated with age, healing period until loading, insertion torque (IT), the diameter of fixture and the location of implant. Only the quality of bone in group 2 (6 week) was correlated with the stability of implant.CONCLUSIONHealing period of 6 weeks can make the similar clinical prognosis of implants to that of healing period of 12 weeks if bone quality is carefully considered in case of early loading.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Prospective randomized clinical trial of hydrophilic tapered implant placement at maxillary posterior area: 6 weeks and 12 weeks loading

et al. 2016

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“…3 Owing to various issues related to the use of grey values in CBCT for absolute or relative density estimations, 4 alternative methods for quantitative bone analysis have been explored. 5 Recently, the application of bone structure (or microarchitecture) analysis, 6 which has been used ex vivo on bone samples visualized in two dimension (histomorphometry) or three dimension (micro-CT), 7,8 has been considered for CBCT. Various studies have evaluated the correlation between bone parameters obtained through high-resolution micro-CT or CBCT scanning.…”

Section: Introductionmentioning

confidence: 99%

Effect of exposure parameters and voxel size on bone structure analysis in CBCT

Pauwels¹,

Faruangsaeng²,

Charoenkarn³

et al. 2015

Dentomaxillofacial Radiology

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Objective: To evaluate the effect of exposure parameters and voxel size on bone structure analysis in dental CBCT. Methods: 20 cylindrical bone samples underwent CBCT scanning (3D Accuitomo 170; J. Morita, Kyoto, Japan) using three combinations of tube voltage (kV) and tube currentexposure time product (mAs), corresponding with a CT dose index of 3.4 mGy: 90 kV and 62 mAs, 73 kV and 108.5 mAs, and 64 kV and 155 mAs. Images were reconstructed with a voxel size of 0.080 mm. In addition, the 90 kV scan was reconstructed at voxel sizes of 0.125, 0.160, 0.200, 0.250 and 0.300 mm. The following parameters were measured: bone surface (BS) and bone volume (BV) per total volume (TV), fractal dimension, connectivity density, anisotropy, trabecular thickness (Tb. Th.) and trabecular spacing (Tb. Sp.), structure model index (SMI), plateness, branches, junctions, branch length and triple points. Results: For most parameters, there was no significant effect of the kV value. For BV/TV, "90 kV" differed significantly from the other kV settings; for SMI, "64 vs 73 kV" was significant. For BS/TV, fractal dimension, connectivity density, branches, junctions and triple points values incrementally decreased at larger voxel sizes, whereas an increase was seen for Tb. Th., Tb. Sp., SMI and branch length. For anisotropy and plateness, no (or little) effect of voxel size was seen; for BV/TV, the effect was inconsistent. Conclusions: Most bone structure parameters are not affected by the kV if the radiation dose is constant. Parameters dealing with the trabecular structure are heavily affected by the voxel size. Dentomaxillofacial Radiology (2015Radiology ( ) 44, 20150078. doi: 10.1259 Cite this article as: Pauwels R, Faruangsaeng T, Charoenkarn T, Ngonphloy N, Panmekiate S. Effect of exposure parameters and voxel size on bone structure analysis in CBCT. Dentomaxillofac Radiol 2015; 44: 20150078.

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“…In addition, the highest correlation was found between the ISV and bone density variables such as BV and BV/TV. However, ISQ and bone density either from living bone or cadaveric bone did not show any correlation [24,25].…”

Section: Basic Information About Bone Density In Human Jawbonesmentioning

confidence: 76%

Reference and Techniques used in Alveolar Bone Classification

Seriwatanachai

Kiattavorncharoen²,

Suriyan³

et al. 2015

J Interdiscipl Med Dent Sci

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The marginal bone loss that usually observed around dental implant has been well documented and expected. It has related with self-reaction to the forensic body of each patient as well as the osseointegrated interface. Bone quantity and quality of the implant site may help to define the implant-bone interface, which in turn affects primary stability of the immediate implant placement. Analysis of bone quality prior to surgery provides vital information during treatment planning for dental implant. Additionally, it helps in predicting postsurgical success. The classification of bone quality, however, is difficult to follow clinically, as tactile assessments are subject to the variation among surgeons. Although imaging techniques, such as computed tomography (CT) or cone bean computed tomography (CBCT), are useful to determine bone quality, the exposure to radiation and its precision, are still of concern. This paper reviews common techniques and reference used in dental bone classification as well as the recent reports from histomorphometric analysis and molecular components. It is well acknowledged that clinical awareness of evaluating the amounts of bone surrounding the implant site by appropriate method is critical for a successful outcome.

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Bone tissue microarchitectural characteristics at dental implant sites part 2: correlation with bone classification and primary stability

Cited by 44 publications

References 23 publications

Prospective randomized clinical trial of hydrophilic tapered implant placement at maxillary posterior area: 6 weeks and 12 weeks loading

Prospective randomized clinical trial of hydrophilic tapered implant placement at maxillary posterior area: 6 weeks and 12 weeks loading

Effect of exposure parameters and voxel size on bone structure analysis in CBCT

Reference and Techniques used in Alveolar Bone Classification

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