Cortical bone and ridge thickness of hyperdivergent and hypodivergent adults

Horner, K; Behrents, Rolf G.; Kim, Ki Beom; Buschang, Peter H.

doi:10.1016/j.ajodo.2012.03.021

Cited by 87 publications

(78 citation statements)

References 32 publications

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“…In the current study , it was revealed that cortical bone thickness increased from anterior to posterior on the buccal side of the mandible, these findings are consistent with studies by (6,36,35) .The pattern can be explained by masticatory force distribution within the mandible. The force developed during biting increases from anterior teeth to molars (37 ,38) .…”

supporting

confidence: 81%

Evaluation of Interradicular Cortical Bone Thickness for Orthodontic Miniscrew Implant Placement Using Cone Beam Computed Tomography

Jassim¹,

Al-Nakib²

2016

Iraqi dent. j.

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Background: Two factors, safety and stability that clinicians should consider during miniscrew implant placement. Safety is involved to MD distance and stability is involved to bone thickness. No Iraqi studies had been evaluated bone thickness and mesiodistal distance related to mini-implant placement for orthodontic anchorage at age 18 -35 years The aim of study: This study aimed to assess the three dimensional interradicular areas and the cortical bone thickness in Iraqi patients wit h Class I skeletal pattern and to determine the safe and suitable sites for orthodontic miniscrew implant by use the CBCT. Materials and Methods : The sample of the present study include a total of 20 Iraqi arabic patients aged 18-35 years of both sexes (10 males and 10 females) attending the Porceka Center at al Hilla city for CBCT scan for different CBCT diagnostic purposes from the period between November 2014 to May 2015.Measurements were made from the mesial aspect of the first premolar to the mesial aspect of the second molar of mandible, at 2, 4, 6, 8, and 10 mm heights from the alveolar bone crest in each interradicular area. Results: In males, the greatest buccal cortical thickness, buccolingual alveolar process width and mesiodistal distance were between the first and second molar at 10-mm height (3.8 ± 0.92 mm, 15.7 ± 1.33 mm and 4.7± 1.01respectively). In females, the greatest buccal cortical thickness, buccolingual alveolar process width and mesiodistal distance were between the first and second molar at 10-mm height (2.7 ± 0.16 mm, 13.8 ± 1.59 mm and 6.1± 0.91respectively). There was statistically significant sex difference in buccal cortical thickness, buccolingual alveolar process width and mesiodistal distance which were larger with males. Conclusion: Cone Beam ComputedTomography is a precise tool for evaluation the interradicular area and buccal cortical bone thickness to select the most suitable position of orthodontic miniscrew insertion.

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supporting

confidence: 81%

Evaluation of Interradicular Cortical Bone Thickness for Orthodontic Miniscrew Implant Placement Using Cone Beam Computed Tomography

Jassim¹,

Al-Nakib²

2016

Iraqi dent. j.

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“…It is believed that patients with hyperdivergence, a long face, have thinner bone both on the buccal and the oral sides compared with individuals with a short face type (hypodivergence) [17, 36, 37]. This was confirmed by Gracco et al as well.…”

Section: Discussionmentioning

confidence: 85%

Relationship between anterior mandibular bone thickness and the angulation of incisors and canines—a CBCT study

2017

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ObjectivesThe morphology of the maxillary and mandibular alveolar cortex plays an important role in the planning of orthodontic treatment. Cone-beam computed tomography (CBCT) provides a precise demonstration of anatomical structures. Therefore, the aim of this paper was to evaluate what influence the position of incisors and canines have on the dimensions of the cortical and spongious bone of the anterior mandibular alveolar process.Materials and methodsThe material consisted of 100 CBCT volumes (61 females and 39 males, aged 18–71 years) obtained by means of a Gendex GXCB-500 machine and analysed using i-CAT Vision and CorelDRAW 9 software. Several linear and angular measurements were taken of cortical and spongious mandibular, vestibular and lingual alveolar bone.ResultsThe thickness of the vestibular spongious bone increased around lateral incisors and canines together with dental axis inclination, as did the thickness of the lingual spongious bone around central incisors and canines with greater angles of vestibular cortex curvature. In all teeth, the thickness of lingual cancellous bone decreased along with increase of the angle of tooth inclination. In the case of almost all groups of teeth, the thickness of lingual cancellous bone around teeth declined as the angle of curvature of the cortical bone decreased. The rotation of mandibular incisors and canines did not affect the thickness of the surrounding bone.ConclusionsThe position of teeth has little influence on vestibular bone thickness and is only significant around central incisors. In the case of almost all groups of teeth, the thickness of lingual spongious bone around teeth declined as the angle of curvature of the cortical bone decreased.Clinical relevanceCBCT is a diagnostic tool that provides detailed information on the dimensions of the anterior dentate mandibular alveolar process.

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“…In the pre-molar and molar region, cortical bone is significantly thicker and cancellous bone is wider in patients with a low vertical facial height than in patients with a hyperdivergent profile. (Horner et al 2012). Swasty et al 2011; reported a significant higher cortical bone thickness, with increasing age.…”

Section: % Cancellous Bonementioning

confidence: 91%

The proportion of cancellous bone as predictive factor for early marginal bone loss around implants in the posterior part of the mandible

Simons

Smit

Duyck

et al. 2014

Clinical Oral Implants Res

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Very cortical bone could jeopardize the long-term stability of the marginal bone surrounding implants placed in the posterior region of the mandible. A correlation between marginal bone loss and the proportion of cortical bone was demonstrated around Brånemark implants. At present, no comparable studies are available, and therefore, it cannot be excluded that similar events take place around other implant systems.

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Cortical bone and ridge thickness of hyperdivergent and hypodivergent adults

Cited by 87 publications

References 32 publications

Evaluation of Interradicular Cortical Bone Thickness for Orthodontic Miniscrew Implant Placement Using Cone Beam Computed Tomography

Evaluation of Interradicular Cortical Bone Thickness for Orthodontic Miniscrew Implant Placement Using Cone Beam Computed Tomography

Relationship between anterior mandibular bone thickness and the angulation of incisors and canines—a CBCT study

The proportion of cancellous bone as predictive factor for early marginal bone loss around implants in the posterior part of the mandible

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