Effect of changing the head position on accuracy of transverse measurements of the maxillofacial region made on cone beam computed tomography and conventional posterior-anterior cephalograms

Shokri, Abbas; Miresmaeili, Amirfarhang; Farhadian, Nasrin; Falah-Kooshki, Sepideh; Amini, Payam; Mollaie, Najmeh

doi:10.1259/dmfr.20160180

Cited by 20 publications

(16 citation statements)

References 27 publications

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“…CBCT posterior‐anterior cephalograms are shown to be more accurate than conventionally obtained extraoral cephalograms, in which transverse measurements may be impacted by changes in head position and head movements 60 . In dental implant treatment planning, one of the most frequently reported applications of CBCT is the ability to obtain height and width linear measurements of the alveolar ridge 61‐75 …”

Section: Resultsmentioning

confidence: 99%

“…CBCT posterioranterior cephalograms are shown to be more accurate than conventionally obtained extraoral cephalograms, in which transverse measurements may be impacted by changes in head position and head movements. 60 In dental implant treatment planning, one of the most frequently reported applications of CBCT is the ability to obtain height and width linear measurements of the alveolar ridge. [61][62][63][64][65][66][67][68][69][70][71][72][73][74][75] CBCT images have been found to provide reliable bone quantity information for preoperative implant planning in different areas of the maxilla and mandible both in clinical and experimental studies.…”

Section: Use Of Cbct For Diagnosis and Treatment Outcome Assessmentmentioning

confidence: 99%

See 1 more Smart Citation

The Use of Cone‐Beam Computed Tomography in Management of Patients Requiring Dental Implants: An American Academy of Periodontology Best Evidence Review

Ríos

Borgnakke

Benavides

2017

Journal of Periodontology

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The current available literature reflects an increased optimization of emerging CBCT imaging protocols and further highlights its diverse applications for dental implant therapy. This technology continues to be considered an advanced point-of-care imaging modality and should be used selectively as an adjunct to two-dimensional dental radiography. As with other ionizing radiation imaging modalities, CBCT imaging should be used only when the potential benefits to the patient outweigh the risks. Dental health care professionals should consider CBCT imaging only when they expect the diagnostic information yielded will lead to better patient care, enhanced patient safety, and ultimately facilitate a more predictable, optimal treatment outcome.

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Section: Resultsmentioning

confidence: 99%

Section: Use Of Cbct For Diagnosis and Treatment Outcome Assessmentmentioning

confidence: 99%

The Use of Cone‐Beam Computed Tomography in Management of Patients Requiring Dental Implants: An American Academy of Periodontology Best Evidence Review

Ríos

Borgnakke

Benavides

2017

Journal of Periodontology

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“…2D images have not been considered the method of choice to detect asymmetries due to the superimposition of the bones, irregular structures of the middle face and differences in head position during X‐ray exposition. In all cases, errors are generated to landmark identification and measurements …”

Section: Discussionmentioning

confidence: 99%

Three‐dimensional assessment of craniofacial asymmetry in children with transverse maxillary deficiency after rapid maxillary expansion: A prospective study

Evangelista

Ferrari-Piloni

Barros

et al. 2020

Orthod Craniofacial Res

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Objective: The aim of this study was to evaluate craniofacial asymmetry in children with transverse maxillary deficiency, with or without functional unilateral posterior crossbite (UPC), before and after rapid maxillary expansion (RME). Setting and sample population: A sample of 51 children with cone beam computed tomography scans obtained before RME (T1) and a year after RME (T2). Material and methods: This prospective study consisted of 2 groups: 25 children with functional UPC (6.77 ± 1.5 years) and 26 children without UPC (7.41 ± 1.31 years). Linear and angular measurements were obtained from zygomatic, maxilla, glenoid fossa and mandible, using original and mirrored 3D overlapped models. All right and left side comparisons in both groups and intergroups asymmetries were compared using MANOVA and t test for independent samples, respectively, statistically significant at P < .05. Results: The UPC group showed no side differences, but mandibular horizontal rotation at T1, and this asymmetry was improved in T2. The non-UPC group showed at baseline significant lateral asymmetry in orbitale, position of palatine foramen, respectively, in average 2.95 mm and 1.16 mm, and 0.49 mm of average asymmetry in condylar height. The glenoid fossa was symmetric in both groups at T1 and T2. Conclusions: Children with transverse maxillary deficiency showed slight morphological asymmetry, located in the mandible position in cases of UPC, and in the orbital and maxillary regions in cases without UPC. One year after RME, patients improved their craniofacial asymmetry, with significant changes in the mandible and correction of the mandibular rotation in patients who presented UPC.

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“…CBCT was introduced for dentistry in 1988, and it is currently an ideal imaging modality for many dental appli-cations. This modality has superiority over conventional CT mainly owing to having a lower patient radiation dose, lower cost and higher spatial resolution.CBCT also enables reconstruction of twodimensional (2D) views from three-dimensional (3D) images for conventional cephalometric analysis [19].…”

Section: Evaluation Of Sexual Dimorphismmentioning

confidence: 99%

Evaluation of Sexual Dimorphism with Mandibular Parameters by Digital Panoramic Radiography

Rad¹,

Javanshir²,

Nemati³

et al. 2020

TODENTJ

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Introduction: Sex determination is the first step of personal identification in the field of forensics and is essential for reconstructive profiling. The skull appears to be the most reliable part of the skeleton, apart from the pelvis, in sex determination. Tooth and bone are used as a key tool for personal identification due to their high resistance to decomposition and degradation. The present study aimed to evaluate the sexual dimorphism with mandibular parameters by digital panoramic radiography. Materials and Methods: In this analytical-descriptive study, the mandibular parameters in 315 females and 217 males, including the ramus height, the coronoid height, the mental height, the mandible body height, the minimum width of the ramus, the distance between the right and left gonial angle, the distance between the right and left condyle and the distance between the right and left coronoid, were measured in the panoramic radiography via SCANORA software. Discriminant function and canonical regression methods were used to determine the predictability of mandibular parameters in sexual dimorphism. P < 0.05 was considered to be statistically significant. Results: All parameters were statistically significant between genders (P<0.05). The mean of all parameters, except the gonial angle, in males, was higher than that of the female. Percentage of correctly classified in discriminant function based on the central and right side and left side dimorphic parameters of the mandible is 82.5% and 82.9%, respectively. Conclusion: According to the present study, panoramic radiography can be considered as a valuable tool in sex determination (with an accuracy of 82.5%), and all parameters of mandible had sexual dimorphism and showed that they are reliable parameters with a total accuracy of 82.5% in the sexual dimorphism.

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Effect of changing the head position on accuracy of transverse measurements of the maxillofacial region made on cone beam computed tomography and conventional posterior-anterior cephalograms

Cited by 20 publications

References 27 publications

The Use of Cone‐Beam Computed Tomography in Management of Patients Requiring Dental Implants: An American Academy of Periodontology Best Evidence Review

The Use of Cone‐Beam Computed Tomography in Management of Patients Requiring Dental Implants: An American Academy of Periodontology Best Evidence Review

Three‐dimensional assessment of craniofacial asymmetry in children with transverse maxillary deficiency after rapid maxillary expansion: A prospective study

Evaluation of Sexual Dimorphism with Mandibular Parameters by Digital Panoramic Radiography

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