Effects of orthodontic treatment on human alveolar bone density distribution

Huang, Hengming; Richards, Michael R.; Bedair, Tamer; Fields, Henry W.; Palomo, Juan Martín; Johnston, William M.; D, Kim

doi:10.1007/s00784-012-0906-y

Cited by 18 publications

(24 citation statements)

References 61 publications

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“…Huange et al 18 used CBCT-based degree of bone mineralization (DBM) to evaluate alterations of bone density distribution in the maxilla and mandible after orthodontic treatment in 43 patients ranging from 11.5 to 17.4 years of age. Although they did not aim at discovering whether the alveolar bone density would decrease or increase, they showed that the computed tomography (CT) attenuation parameters increased (without any statistical analysis or mentioned P-values), which means that the alveolar bone density and subsequently bone quality increased.…”

Section: Discussionmentioning

confidence: 99%

“…16 Tooth displacement necessarily changes the gingiva, periodontal fibers and alveolar bone. 17,18 Orthodontic tooth movement is believed to happen either “through bone” or “with bone”. When teeth are displaced “with bone”, the amount of the alveolar bone resorption in the direction of the force balances the bone apposition, with no net loss of bone.…”

Section: Introductionmentioning

confidence: 99%

“…18,22-24 In the studies, density or thickness of cortical bone has been used as a measure of bone quality. Huange et al 18 evaluated the density of one interdental area, between the left first molar and the second premolar in the maxilla and mandible, while Hsu et al 22 assessed the density of maxillary anterior segment. In both researches, the alveolar bone density was found to decrease after orthodontic treatment.…”

Section: Introductionmentioning

confidence: 99%

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Assessment of the changes in alveolar bone quality after fixed orthodontic therapy: A trabecular structure analysis

Haghnegahdar

Najafi

Sabet

et al. 2016

J Dent Res Dent Clin Dent Prospects

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Background. Tooth displacement changes the periodontium. The aim of orthodontic treatment is desired tooth movement with minimum side effects on the alveolar bone quality. The aim of the present study was to assess changes of alveolar trabeculation in children, young adults and adults and the two genders.Methods. In this cross-sectional study, 63 patients who had been treated in Department of Orthodontics, School of Dentistry, Shiraz University of Medical Sciences, Shiraz, Iran, were chosen with convenient sampling method. They were divided into three groups based on their age. Their digitized panoramic radiographs (PRs) were evaluated at six interdental sites from the mesial aspect of the mandibular second molars to the distal aspect of the mandibular first premolars using a visual index. The trabeculation pattern was assigned as either dense (score 3), dense-sparse (score 2) or sparse (score 1). Data were imported to SPSS. Mean of the scores before treatment (score B) and mean of them after treatment (score A) were compared for each group with paired t-test. Changes between score B and sore A of the groups were compared using one-way ANOVA and post hoc tests.Results. Mean score A was significantly higher than mean score B in children (P = 0.001). In contrast, mean score A was significantly lower than mean score B in young adults (P = 0.003).Conclusion. Orthodontists should be cautious when treating young adults and adults regarding the probable, yet possibly temporary, negative effects of orthodontic therapy on the alveolar bone quality.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Assessment of the changes in alveolar bone quality after fixed orthodontic therapy: A trabecular structure analysis

Haghnegahdar

Najafi

Sabet

et al. 2016

J Dent Res Dent Clin Dent Prospects

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“…Bone resorption after tooth extraction is an unavoidable event, and the morphological features of the jawbone change greatly after tooth loss [4-7]. Moreover, the maxilla has a thinner cortical bone than the mandible and presents with a structure where cancellous bone predominates [8]. Therefore, implants have a lower survival rate than the mandible, and the search for sites suitable for implant placement has become an urgent need [9].…”

Section: Introductionmentioning

confidence: 99%

Three-dimensional analysis of incisive canals in human dentulous and edentulous maxillary bones

et al. 2015

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Background The purpose of this study was to reveal the structural properties that need to be considered in dental implant treatment by investigating differences between dentulous and edentulous maxillae in the three-dimensional (3D) microstructure of the incisive canals (ICs) and their surrounding bone.MethodsA total of 40 maxillary bones comprising 20 dentulous maxillae and 20 edentulous maxillae were imaged by micro-CT for 3D observation and measurement of the IC and alveolar bone in the anterior region of the IC.ResultsThe Y-morphology canal was most frequently observed at 60% in dentulous maxilla and 55% in edentulous maxilla. There was a significant difference between dentulous and edentulous maxillae in IC diameter and volume, but no significant difference between the two in the major axis of the ICs.ConclusionsThe anatomic structure surrounding the IC has limited area for implant placement. Therefore, where esthetic and long-term maintenance requirements are taken into account, careful attention is needed when setting the placement position. Also, due to the resorption of bone, edentulous maxillae have a different IC morphology from dentulous maxillae, and therefore, a cautious approach is required.

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“…Compared to the mandible, the maxilla has thinner cortical bone and cancellous trabecular bone 4,5) . Park et al compared the bone mineral density (BMD) of the maxilla and mandible based on Hounsfield unit (HU) values and found that the mandible had a higher BMD than the maxilla 6) .…”

Section: Introductionmentioning

confidence: 99%

Biological Apatite Crystallite Alignment Analysis of Human Maxillary Molar Region Cortical Bone with Microbeam X-ray Diffraction

Kasahara

Matsunaga

Odaka

et al. 2016

J. Hard Tissue Biology.

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The jaw bone is a specialized bone which in association with the masticatory muscles, moderates the occlusal forces transmitted to the jaw via teeth. It is suggested that there is a strong relationship between the structural characteristics of the jaw bone and occlusal force. Earlier studies involving bone density have shown clear differences between the properties of the maxilla and those of the mandible. We believe that assessment of the bone is also necessary to gain a better understanding of the material properties of the jaw bone, which maintains sufficient strength to withstand mechanical stress. In the present study, the authors conducted a quantitative assessment of biological apatite (BAp) crystallite alignment, which is an indicator used in bone quality assessment, with the aim of clarifying the structural characteristics of the human maxilla. Using dentulous maxillae from Japanese cadavers, we measured the bone mineral density (BMD) and BAp crystallite alignment of first molar cortical bone, which was the area of interest. For measurement, the maxilla was classified into a total of four regions, consisting of cortical bone surrounding the alveolar process and cortical bone surrounding the root, on both the buccal and palatal sides, and each of these regions was assessed. The results indicated no significant differences in BMD values based on site, but in the buccal cortical bone surrounding the root, strong alignment was observed in the vertical direction (Y-axis) in relation to the occlusal plane. Moreover, strong alignment was seen in the mesiodistal direction for palatal cortical bone compared to buccal cortical bone. At the same time, however, all of the measurement regions in the buccopalatal direction (Z-axis) showed low values for both buccal and palatal cortical bone. Based on the results of the present study, it was confirmed that buccal cortical bone in the maxillary first molar cortical bone region has a strong mechanical characteristic in the Y-axis direction. This suggests that buccal cortical bone is more strongly affected by occlusal force, and it is surmised that it plays a significant role in transmitting stress generated primarily by the buccal root.

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Effects of orthodontic treatment on human alveolar bone density distribution

Abstract: The CBCT-based DBM analysis can be used clinically to assess alveolar bone quality changes induced by orthodontic treatment to improve treatment planning and result evaluation.

Cited by 18 publications

References 61 publications

Assessment of the changes in alveolar bone quality after fixed orthodontic therapy: A trabecular structure analysis

Assessment of the changes in alveolar bone quality after fixed orthodontic therapy: A trabecular structure analysis

Three-dimensional analysis of incisive canals in human dentulous and edentulous maxillary bones

Biological Apatite Crystallite Alignment Analysis of Human Maxillary Molar Region Cortical Bone with Microbeam X-ray Diffraction

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