CBCT imaging – A boon to orthodontics

Machado, Genevive L.

doi:10.1016/j.sdentj.2014.08.004

Cited by 59 publications

(48 citation statements)

References 34 publications

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“…Further investigation is needed to identify the genetic factors that affect morphogenesis of the mandible in the Egyptian population. Moreover, the use of 2-dimensional evaluation techniques using cephalograms may present some limitations for analyzing the complex structure of the mandible 18 . Future association studies using recent and more standardized 3-dimensional imaging techniques, such as cone-beam computed tomography imaging, may allow more accurate evaluations of the variations in craniofacial form.…”

Section: Discussionmentioning

confidence: 99%

Association of Growth Hormone Receptor Gene Variants with Mandibular Form in an Egyptian Population

:筆頭著者:責任著者

Yamaguchi

Tomita

et al. 2017

Showa Univ J Med Sci

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: A signi cant genetic component is involved in the development of the craniofacial form. Recently, the growth hormone receptor gene GHR variants rs6180 and rs6184 were associated with variations in mandibular form. To con rm these ndings we evaluated the relationship between these GHR variants and mandibular form in a cohort of Egyptian individuals with a normal skull form. The patients consisted of 191 unrelated Egyptian adults 92 males, 99 females ; 18-55 years . Allele frequencies of the rs6180 and rs6184 variants were determined from genomic DNA extracted from saliva using the Taqman genotyping assay. Lateral and posteroanterior cephalometric tracings were used to obtain 19 mandibular measurements. The association between the GHR variants and the mandibular measurements was examined using regression analysis. The frequency of the minor rs6184 variant was very low at 1.5 : therefore, association studies were not performed for this variant. The rs6180 variant was not associated with any of the measurements representing mandibular form in our study cohort. The frequency of the rs6184 variant was very low in our cohort of Egyptian subjects. We also found no association between the rs6180 variant and the measurements representing the mandibular form. By excluding the involvement of these GHR variants in in uencing mandibular form, our results may help to identify the actual variant s affecting the mandibular form in the Egyptian population.

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Section: Discussionmentioning

confidence: 99%

Association of Growth Hormone Receptor Gene Variants with Mandibular Form in an Egyptian Population

:筆頭著者:責任著者

Yamaguchi

Tomita

et al. 2017

Showa Univ J Med Sci

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“…Dentistry is increasingly using cone beam computed tomography (CBCT), including in implant dentistry (Tyndall et al, 2012;Gupta and Ali, 2013;Bornstein et al, 2014), endodontics (Lofthag-Hansen et al, 2007;Patel, 2009;Janner et al, 2011), oral and maxillofacial surgery (Alamri et al, 2012), periodontics (Walter et al, 2009;De Faria Vasconcelos et al, 2012), orthodontics (Van Vlijmen et al, 2012;Machado, 2015), and temporomandibular joint disorders (Alamri et al, 2012).…”

Section: Introductionmentioning

confidence: 99%

Accuracy of Cone Beam Computed Tomography for Dental Implant Treatment Planning

Khongkhunthian¹,

Jomjunyong²,

Reichart³

2017

CMUJNS

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Glutinous rice bran (GRB) is a byproduct of milling rice. Because of its high protein content, GRB can be used to produce protein hydrolysate with antioxidative properties. The antioxidant activity of protein hydrolysate depends on hydrolysis conditions. In this study, protein from GRB cv. RD6 was prepared and then subjected to proteolytic hydrolysis by alcalase. The hydrolysis conditions were optimized using response surface methodology (RSM). We investigated two independent variables: the enzyme to substrate (E/S) ratio (0.59-3.41%, w/w) and the time taken for hydrolysis to occur (45-555 minutes). The E/S ratio and hydrolysis time significantly affected the yield, DPPH radical scavenging activity, metal chelating activity, degree of hydrolysis (DH), and average molecular weight (MW) of the protein hydrolysates. The optimum conditions for hydrolysis were an E/S ratio of 2.84% and 480 minutes for hydrolysis, which obtained a yield of 40.73 ± 0.44%, an IC 50 value of 0.87 ± 0.02 mg/ml in the DPPH assay, a metal chelating activity of 72.80 ± 1.79%, a DH of 22.18 ± 0.42% and a MW of 3.07 ± 0.14 kDa. GRB protein hydrolysate, produced using alcalase, could have potential applications as an ingredient in functional food products due to its high antioxidative properties.

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“…[8] The purpose to design maxillofacial cone beam CT (CBCT) was to set off some of the limitations of conventional CT along with decreasing the patients' exposure to radiation. [9] Tsiklakis et al explained that CBCT is a new technique producing reconstructed high diagnostic quality images using lower radiation doses than normal CT; therefore, it may be considered as the choice of imaging modality when the investigation of bony changes of the TMJ is the task at hand. [10] Review of Literature CT has been a valuable aid in the evaluation of the TMJ which provides excellent visualization of a broad spectrum of osseous pathological changes such as osteophytes, condylar erosion, fractures, ankylosis, dislocation, and growth abnormalities such as condylar hyperplasia.…”

Section: Introductionmentioning

confidence: 99%

Cone beam computed tomography as diagnostic modality in temporomandibular disorders: A report of four cases

Subramaniam¹,

Subramaniam²,

Das³

et al. 2016

JCRI

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A considerable number of people suffer from temporomandibular joint (TMJ) disorders. Detailed history and clinical examination are essential for diagnosing TMJ disorders. Diagnosis of temporomandibular disorder (TMD) is based on clinical and radiographic investigations, where the latter is an important part of the clinical diagnosis. There are varieties of imaging techniques modalities to visualize TMJ ranging that include TMJ projections such as transpharyngeal view, transcranial view, orthopantomography, and conventional tomographic sections of TMJ. The TMJ disorders are frequently associated with degenerative bone changes such as flattening, erosion, osteophytes, subchondral bone sclerosis, pseudophytes, and articular eminence pneumatization which can be challenging to detect on conventional radiographs. Due to superimposition of the anatomic structures, accurate evaluation of the TMJ by conventional radiography is limited. To overcome this limitation, advanced modalities such as magnetic resonance imaging, arthrography and conventional computed tomography (CT) have been used for TMJ imaging for evaluating the joint space and the position of the condyle within the glenoid fossa. Accurate evaluation of the TMJ by conventional radiography is limited by structure superimposition. CT has been extensively used and proven imaging modality to assess the contours of the cortical bone and TMJ dynamics for evaluating the osseous changes in TMJ; however, high cost, large radiation dose, and long scanning time pose severe limitations. Due to high spatial resolution characteristics along with comparatively low dose, cone beam CT (CBCT) is an emerging technique that is being widely used in maxillofacial imaging. It is superior to conventional radiographic techniques in detecting bony TMJ changes because it detects three-dimensionally the bony structures with accuracy and involves a very slight increase in dosage of radiation when compared with the newer digital panoramic imaging and cephalometric imaging. Hence, a study of 4 cases of TMJ disorders that have been diagnosed with the help of CBCT has been presented in this article.

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CBCT imaging – A boon to orthodontics

Cited by 59 publications

References 34 publications

Association of Growth Hormone Receptor Gene Variants with Mandibular Form in an Egyptian Population

Association of Growth Hormone Receptor Gene Variants with Mandibular Form in an Egyptian Population

Accuracy of Cone Beam Computed Tomography for Dental Implant Treatment Planning

Cone beam computed tomography as diagnostic modality in temporomandibular disorders: A report of four cases

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