Three-dimensional evaluation of interradicular spaces and cortical bone thickness for the placement and initial stability of microimplants in adults

Park, Joorok; Cho, Heon Jae

doi:10.1016/j.ajodo.2009.01.023

Cited by 136 publications

(120 citation statements)

References 31 publications

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“…Despite structural differences, the cortical thickness of these dog maxillae and mandibles are comparable to adult patients. 39 Consistent with a previous study, 28 cortical bone of the mandible is thicker than that of the maxilla (Table 6). With greater cortical thickness, longer implant surfaces were shown with all mandibular MSIs.…”

Section: Discussionsupporting

confidence: 81%

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

Taing-Watson

Katona

Stewart

et al. 2014

The Angle Orthodontist

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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.)

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Section: Discussionsupporting

confidence: 81%

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

Taing-Watson

Katona

Stewart

et al. 2014

The Angle Orthodontist

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“…The buccal cortical bone thickness seems to be greater in the mandible than in the maxilla. [12][13][14][15][16] Baumgaertel and Hans 15 studied 30 dry skulls and found that the thickness of the buccal cortical bone increases with increasing distance from the alveolar crest in the mandible and in the maxillary anterior area.…”

Section: Introductionmentioning

confidence: 99%

Optimal sites for orthodontic mini-implant placement assessed by cone beam computed tomography

Fayed¹,

Pazera²,

Katsaros³

2010

The Angle Orthodontist

122

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Objectives: To determine (1) the optimal sites for mini-implant placement in the maxilla and the mandible based on dimensional mapping of the interradicular spaces and cortical bone thickness and (2) The effect of age and sex on the studied anatomic measurements. Material and Methods: The cone beam computed tomography images of 100 patients (46 males, 54 females) divided into two age groups (13-18 years), and (19-27 years) were used. The following interradicular measurements were performed: (1) Buccolingual bone thickness; (2) Mesiodistal spaces both buccally and palatally/lingually; and (3) Buccal and palatal/lingual cortical thicknesses. Results: In the maxilla, the highest buccolingual thickness existed between first and second molars; the highest mesiodistal buccal/palatal distances were between the second premolar and the first molar. The highest buccal cortical thickness was between the first and second premolars. The highest palatal cortical thickness was between central and lateral incisors. In the mandible, the highest buccolingual and buccal cortical thicknesses were between the first and second molars. The highest mesiodistal buccal distance was between the second premolar and the first molar. The highest mesiodistal lingual distance was between the first and second premolars. The highest lingual cortical thickness was between the canine and the first premolar. The males and the older age group had significantly higher buccolingual, buccal, and palatal cortical thicknesses at specific sites and levels in the maxilla and the mandible. Conclusions: A clinical guideline for optimal sites for mini-implant placement is suggested. Sex and age affected the anatomic measurements in certain areas in the maxilla and the mandible. (Angle Orthod. 2010;80:939-951.)

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“…CT scans were taken of all patients in the areas specified. Cortical bone thickness did not vary significantly from right to left sides [9][10][11][12] In a study done by Cassetta et al (2013) they concluded that adults show a thicker alveolar cortical bone than adolescents. Alveolar cortical bone thickness and density were greater in males than in females, in mandible than in maxilla, in the posterior region than the anterior, in oral than buccal side.…”

Section: Discussionmentioning

confidence: 99%

Analysis of Buccal Cortical Plate Thickness for Placement of Mini-Implants – A CBCT Study

David

Ranjan

Dinesh

et al. 2017

IRA-JAS

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<p>The purpose of this study was to quantitatively evaluate buccal cortical bone thickness in the maxilla and mandible so as to provide guidelines for mini-implant placement. Cone beam computed tomographic scans of thirty patients (Age 16-30 years) were collected from preorthodontic records. Each measurement area was coded with a number beginning in the maxillary right quadrant distal to the second molar with number 1 and ending in the mandibular right quadrant distal to the second molar with number 30. For analysis these measurement areas were also grouped as sextants. Three measurement points were then defined at 2 mm, 4 mm and 6 mm from the alveolar crest in each measurement. The measuring locations were recorded on the four quadrants, resulting in 90 locations in the buccal cortical plate of maxillary and mandibular arch. The region of interest was explored at each measuring location of the 30 sites using Galileos software. The optimal site for miniimplant placement in the anterior region is between the central and lateral incisors in the maxilla and between the lateral incisor and the canine in the mandible at the 6-mm level from the alveolar crest. At the buccal aspect of the posterior region of both jaws, the optimal sites are between between the first and second molars i.e. in the Maxillary arch at 4 mm level on the right side and left side and in the Mandibular arch at 6 mm level on the right side and left side. </p>

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Three-dimensional evaluation of interradicular spaces and cortical bone thickness for the placement and initial stability of microimplants in adults

Cited by 136 publications

References 31 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

Optimal sites for orthodontic mini-implant placement assessed by cone beam computed tomography

Analysis of Buccal Cortical Plate Thickness for Placement of Mini-Implants – A CBCT Study

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