Bone mineral density. 2012

Mariana Marquezan, and Thiago Chon Leon Lau, and Claudia Trindade Mattos, and Amanda Carneiro da Cunha, and Lincoln Issamu Nojima, and Eduardo Franzotti Sant'Anna, and Margareth Maria Gomes de Souza, and Mônica Tirre de Souza Araújo
Pediatric Dentistry and Orthodontics Department, School of Dentistry, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil. marianamarquezan@gmail.com

OBJECTIVE To verify whether bone mineral density (BMD) of cortical bone, trabecular bone, and total bone influence the primary stability of orthodontic miniscrews and to verify whether there is a correlation between the measurement of BMD by cone-beam computed tomography (CBCT) and central dual-energy x-ray absorptiometry (DEXA). METHODS Twenty bovine bone sections were extracted from the pubic and iliac bones from regions with cortical thicknesses of approximately 1 mm. The BMD of the total bone block was evaluated using two methods: CBCT and DEXA. The BMD of cortical, trabecular, and total bone in the region of interest (ROI) were also evaluated by CBCT. After scanning the bone blocks, 20 self-drilling miniscrews (INP®) 1.4 mm in diameter and 6 mm long were inserted into them. The peak implant insertion torque (IT) was registered. After this, the pull-out test (PS) was performed and the maximum force registered. The Pearson correlation test was applied to verify the correlations between variables. RESULTS The BMD of the total bone block verified by CBCT and DEXA showed a positive and strong correlation (r  =  0.866, P  =  .000). The BMD of the ROI for cortical bone influenced the IT (r  =  0.518, P  =  .40) and the PS of miniscrews (r  =  0.713, P  =  .001, Table 2). However, the total bone BMD (verified by CBCT and DEXA) and trabecular bone BMD presented weak and not statistically significant correlations with primary stability. CONCLUSIONS There was a positive correlation between total bone block BMD measured by DEXA and CBCT. The cortical BMD influenced the IT and PS.

UI MeSH Term Description Entries
D001863 Bone Screws Specialized devices used in ORTHOPEDIC SURGERY to repair bone fractures. Bone Screw,Screw, Bone,Screws, Bone
D002417 Cattle Domesticated bovine animals of the genus Bos, usually kept on a farm or ranch and used for the production of meat or dairy products or for heavy labor. Beef Cow,Bos grunniens,Bos indicus,Bos indicus Cattle,Bos taurus,Cow,Cow, Domestic,Dairy Cow,Holstein Cow,Indicine Cattle,Taurine Cattle,Taurus Cattle,Yak,Zebu,Beef Cows,Bos indicus Cattles,Cattle, Bos indicus,Cattle, Indicine,Cattle, Taurine,Cattle, Taurus,Cattles, Bos indicus,Cattles, Indicine,Cattles, Taurine,Cattles, Taurus,Cow, Beef,Cow, Dairy,Cow, Holstein,Cows,Dairy Cows,Domestic Cow,Domestic Cows,Indicine Cattles,Taurine Cattles,Taurus Cattles,Yaks,Zebus
D003799 Dental Stress Analysis The description and measurement of the various factors that produce physical stress upon dental restorations, prostheses, or appliances, materials associated with them, or the natural oral structures. Analyses, Dental Stress,Analysis, Dental Stress,Stress Analyses, Dental,Stress Analysis, Dental,Dental Stress Analyses
D000818 Animals Unicellular or multicellular, heterotrophic organisms, that have sensation and the power of voluntary movement. Under the older five kingdom paradigm, Animalia was one of the kingdoms. Under the modern three domain model, Animalia represents one of the many groups in the domain EUKARYOTA. Animal,Metazoa,Animalia
D015502 Absorptiometry, Photon A noninvasive method for assessing BODY COMPOSITION. It is based on the differential absorption of X-RAYS (or GAMMA RAYS) by different tissues such as bone, fat and other soft tissues. The source of (X-ray or gamma-ray) photon beam is generated either from radioisotopes such as GADOLINIUM 153, IODINE 125, or Americanium 241 which emit GAMMA RAYS in the appropriate range; or from an X-ray tube which produces X-RAYS in the desired range. It is primarily used for quantitating BONE MINERAL CONTENT, especially for the diagnosis of OSTEOPOROSIS, and also in measuring BONE MINERALIZATION. Absorptiometry, X-Ray,Dual-Photon Absorptiometry,Photodensitometry, X-Ray,Photon Absorptiometry,Single-Photon Absorptiometry,X-Ray Absorptiometry,Absorptiometry, Dual X-Ray,Absorptiometry, Dual-Energy Radiographic,Absorptiometry, Dual-Energy X-Ray,DEXA Scan,DPX Absorptiometry,DXA Scan,Densitometry, X-Ray,Densitometry, Xray,Dual X-Ray Absorptiometry,Dual-Energy Radiographic Absorptiometry,Dual-Energy X-Ray Absorptiometry,Dual-Energy X-Ray Absorptiometry Scan,Radiographic Absorptiometry, Dual-Energy,X-Ray Absorptiometry, Dual-Energy,X-Ray Photodensitometry,Absorptiometries, DPX,Absorptiometry, DPX,Absorptiometry, Dual Energy Radiographic,Absorptiometry, Dual Energy X Ray,Absorptiometry, Dual X Ray,Absorptiometry, Dual-Photon,Absorptiometry, Single-Photon,Absorptiometry, X Ray,DEXA Scans,DXA Scans,Densitometry, X Ray,Dual Energy Radiographic Absorptiometry,Dual Energy X Ray Absorptiometry,Dual Energy X Ray Absorptiometry Scan,Dual Photon Absorptiometry,Dual X Ray Absorptiometry,Photodensitometry, X Ray,Radiographic Absorptiometry, Dual Energy,Scan, DEXA,Scan, DXA,Scans, DEXA,Scans, DXA,Single Photon Absorptiometry,X Ray Absorptiometry,X Ray Absorptiometry, Dual Energy,X Ray Photodensitometry,X-Ray Absorptiometry, Dual,X-Ray Densitometry,Xray Densitometry
D015519 Bone Density The amount of mineral per square centimeter of BONE. This is the definition used in clinical practice. Actual bone density would be expressed in grams per milliliter. It is most frequently measured by X-RAY ABSORPTIOMETRY or TOMOGRAPHY, X RAY COMPUTED. Bone density is an important predictor for OSTEOPOROSIS. Bone Mineral Content,Bone Mineral Density,Bone Densities,Bone Mineral Contents,Bone Mineral Densities,Density, Bone,Density, Bone Mineral
D015921 Dental Implants Biocompatible materials placed into (endosseous) or onto (subperiosteal) the jawbone to support a crown, bridge, or artificial tooth, or to stabilize a diseased tooth. Dental Implants, Mini,Dental Prosthesis, Surgical,Implants, Dental,Dental Implant,Dental Prostheses, Surgical,Implant, Dental,Prostheses, Surgical Dental,Prosthesis, Surgical Dental,Surgical Dental Prostheses,Surgical Dental Prosthesis,Dental Implant, Mini,Mini Dental Implant,Mini Dental Implants
D017268 Dental Prosthesis Retention Holding a DENTAL PROSTHESIS in place by its design, or by the use of additional devices or adhesives. Prosthesis Retention, Dental,Retention, Dental Prosthesis
D052280 Orthodontic Anchorage Procedures Attachment of orthodontic devices and materials to the MOUTH area for support and to provide a counterforce to orthodontic forces. Orthodontic Anchorage Techniques,Anchorage Procedure, Orthodontic,Anchorage Procedures, Orthodontic,Anchorage Technique, Orthodontic,Anchorage Techniques, Orthodontic,Orthodontic Anchorage Procedure,Orthodontic Anchorage Technique,Procedure, Orthodontic Anchorage,Procedures, Orthodontic Anchorage,Technique, Orthodontic Anchorage,Techniques, Orthodontic Anchorage
D054893 Cone-Beam Computed Tomography Computed tomography modalities which use a cone or pyramid-shaped beam of radiation. CAT Scan, Cone-Beam,Cone-Beam CT,Tomography, Cone-Beam Computed,Tomography, Volume Computed,CT Scan, Cone-Beam,Cone-Beam Computer-Assisted Tomography,Cone-Beam Computerized Tomography,Volume CT,Volume Computed Tomography,Volumetric CT,Volumetric Computed Tomography,CAT Scan, Cone Beam,CAT Scans, Cone-Beam,CT Scan, Cone Beam,CT Scans, Cone-Beam,CT, Cone-Beam,CT, Volume,CT, Volumetric,Computed Tomography, Cone-Beam,Computed Tomography, Volume,Computed Tomography, Volumetric,Computer-Assisted Tomography, Cone-Beam,Computerized Tomography, Cone-Beam,Cone Beam CT,Cone Beam Computed Tomography,Cone Beam Computer Assisted Tomography,Cone Beam Computerized Tomography,Cone-Beam CAT Scan,Cone-Beam CAT Scans,Cone-Beam CT Scan,Cone-Beam CT Scans,Scan, Cone-Beam CAT,Scan, Cone-Beam CT,Scans, Cone-Beam CAT,Scans, Cone-Beam CT,Tomography, Cone Beam Computed,Tomography, Cone-Beam Computer-Assisted,Tomography, Cone-Beam Computerized,Tomography, Volumetric Computed

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