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Cephalometry

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https://www.readbyqxmd.com/read/27858070/-evaluation-of-the-maxillary-basal-bone-and-molar-change-of-skeletal-class-ii-malocclusion-treated-by-sagittal-guidance-twin-block
#1
Ying-Yu Yi, Ning Zhao, Gang Shen
PURPOSE: To investigate the effects of sagittal-guidance Twin-block appliance on maxillary basal bone and buccal segment distalization in developing Angle Class II division 1 malocclusion. METHODS: The measurement data of anterior-posterior direction and vertical dimension between pretherapy and post-treatment, including 34 developing Angle Class II division 1 patients with sagittal-guidance Twin-block and non-extraction treatment, were quantitatively analyzed by X-ray cephalometry and Pancherz...
August 2016: Shanghai Kou Qiang Yi Xue, Shanghai Journal of Stomatology
https://www.readbyqxmd.com/read/27723632/the-reliability-of-cephalometric-measurements-in-oral-and-maxillofacial-imaging-cone-beam-computed-tomography-versus-two-dimensional-digital-cephalograms
#2
Arvind Hariharan, N R Diwakar, K Jayanthi, H M Hema, S Deepukrishna, Snehal R Ghaste
CONTEXT: This study compared digital two-dimensional (2D) lateral cephalograms and cone-beam computed tomography (CBCT) total and half-skull images for the reliability of cephalometric measurements. AIMS: (1) To compare the accuracy of cephalometric measurements and reproducibility between the digital and CBCT cephalograms in the Indian population. (2) To compare interobserver variability in landmark identification through their cephalometric measurements by comparing different imaging modalities (CBCT total skull, CBCT half-skull, and conventional lateral cephalogram)...
July 2016: Indian Journal of Dental Research: Official Publication of Indian Society for Dental Research
https://www.readbyqxmd.com/read/27639780/fronto-facial-advancement-and-bipartition-in-crouzon-pfeiffer-and-apert-syndromes-impact-of-fronto-facial-surgery-upon-orbital-and-airway-parameters-in-fgfr2-syndromes
#3
Roman H Khonsari, Benjamin Way, Johan Nysjö, Guillaume A Odri, Raphaël Olszewski, Robert D Evans, David J Dunaway, Ingela Nyström, Jonathan A Britto
A major concern in FGFR2 craniofaciosynostosis is oculo-orbital disproportion, such that orbital malformation provides poor accommodation and support for the orbital contents and peri-orbita, leading to insufficient eyelid closure, corneal exposure and eventually to functional visual impairment. Fronto-facial monobloc osteotomy followed by distraction osteogenesis aims to correct midfacial growth deficiencies in Crouzon-Pfeiffer syndrome patients. Fronto-facial bipartition osteotomy followed by distraction is a procedure of choice in Apert syndrome patients...
August 21, 2016: Journal of Cranio-maxillo-facial Surgery
https://www.readbyqxmd.com/read/27609391/-analysis-of-three-dimensional-stability-of-the-hypoplastic-maxilla-after-orthognathic-surgery-in-cleft-lip-and-palate-patients
#4
Jun-Zi Yingwang, Shun-Yao Shen, Biao Li, Hao Sun, Xu-Dong Wang
PURPOSE: To establish a three dimensional spacial measurement method to analyze the short-term stability of maxilla after orthognathic surgery in cleft lip and palate patients. METHODS: Twenty-five patients with maxillary hypoplasia secondary to cleft lip and palate seeking for orthognathic surgery were included in this study between January 2008 and September 2012. The spiral CT scan for the skull were taken 6 weeks preoperatively (T0), 4 days postoperatively (T1),3 months postoperatively (T2), and 6 months postoperatively (T3) and collected...
June 2016: Shanghai Kou Qiang Yi Xue, Shanghai Journal of Stomatology
https://www.readbyqxmd.com/read/27608365/effect-of-dietary-calcium-deficiency-and-altered-diet-hardness-on-the-jawbone-growth-a-micro-ct-and-bone-histomorphometric-study-in-rats
#5
Yuko Fujita, Shota Goto, Maika Ichikawa, Ayako Hamaguchi, Kenshi Maki
OBJECTIVES: We examined the effects of a low-calcium diet and altered diet hardness on bone architecture and metabolism in the maxilla and mandible. MATERIALS AND METHODS: Male rats (n=48, 3 weeks old) were divided into six groups. In total, 24 rats were given a normal-calcium diet and the others were given a low-calcium diet. Each group was then divided into three subgroups, which were fed a 'hard̕ diet for 8 weeks, a 'soft̕ die for 8 weeks, or switched from the soft diet after 4 weeks to the hard diet for 4 weeks...
September 1, 2016: Archives of Oral Biology
https://www.readbyqxmd.com/read/27555732/applicability-of-the-ricketts-posteroanterior-cephalometry-for-sex-determination-using-logistic-regression-analysis-in-hispano-american-peruvians
#6
Ivan Perez, Allison K Chavez, Dario Ponce
BACKGROUND: The Ricketts' posteroanterior (PA) cephalometry seems to be the most widely used and it has not been tested by multivariate statistics for sex determination. OBJECTIVE: The objective was to determine the applicability of Ricketts' PA cephalometry for sex determination using the logistic regression analysis. MATERIALS AND METHODS: The logistic models were estimated at distinct age cutoffs (all ages, 11 years, 13 years, and 15 years) in a database from 1,296 Hispano American Peruvians between 5 years and 44 years of age...
May 2016: Journal of Forensic Dental Sciences
https://www.readbyqxmd.com/read/27544963/-di-paolo-s-cephalometrical-analysis-of-lower-face-by-means-of-cone-beam-ct
#7
Adrienn Dobai, Tamás Vizkelety, Zsolt Markella, Adrienne Rosta, Ágnes Kucserá, József Barabás
OBJECT: 3D cephalometry is often the only way to set up accurate diagnosis and treatment plan in the field of reconstructive surgery. In these cases complement exposures are needed beyond common cephalograms with higher accuracy than conventional Cone-Beam CT. Consequently the aim of our study was to perform a complex 3D cephalometry. As the first step of this approach, was the 3D adaptation of DiPaolo's Quadrilateral technique, and to determine norms of references in lower face by means of CBCT...
June 2016: Fogorvosi Szemle
https://www.readbyqxmd.com/read/27450468/total-analysis-of-clinical-factors-for-surgical-success-of-adenotonsillectomy-in-pediatric-osas
#8
Ting-So Chang, Rayleigh Ping-Ying Chiang
The objective of this study is the total evaluation of most common clinical factors influencing the successful rate of adenotonsillectomy for pediatric obstructive sleep apnea syndrome (OSAS). Retrospectively, 63 pediatric patients ranged from 2 to 16 years old were included. Syndromics and patients who had received orthodontic treatment or orthognathic surgery were excluded. All patients received pre-operative and postoperative polysomnography and cephalometry. Each patient received adenotonsillectomy by single surgeon...
July 23, 2016: European Archives of Oto-rhino-laryngology
https://www.readbyqxmd.com/read/27413397/craniocervical-posture-in-patients-with-obstructive-sleep-apnea
#9
Chaiane Facco Piccin, Daniela Pozzebon, Fabricio Scapini, Eliane Castilhos Rodrigues Corrêa
INTRODUCTION: Obstructive Sleep Apnea (OSA) is characterized by repeated episodes of upper airway obstruction during sleep. OBJECTIVE: The objective of this study is to verify the craniofacial characteristics and craniocervical posture of OSA and healthy subjects, determining possible relationships with the apnea/hypopnea index (AHI). METHODS: This case-control study evaluated 21 subjects with OSA, who comprised the OSA group (OSAG), and 21 healthy subjects, who constituted the control group (CG)...
July 2016: International Archives of Otorhinolaryngology
https://www.readbyqxmd.com/read/27377110/electromyographic-evaluation-of-a-patient-treated-with-extraoral-traction-a-case-report
#10
E Ortu, M Lacarbonara, R Cattaneo, G Marzo, R Gatto, A Monaco
BACKGROUND: This work seeks to provide information on the utility of surface electromyography (SEMG) as an aid for diagnosing orthodontic conditions. Classic orthodontic monitoring by radiography, plaster models, cephalometry, and photography can be improved by using SEMG before and during treatment, to prevent clinical worsening and relapses. CASE REPORT: This paper presents the SEMG results for a 10-year-old female patient, orthodontically treated by extraoral traction (EOT)...
June 2016: European Journal of Paediatric Dentistry: Official Journal of European Academy of Paediatric Dentistry
https://www.readbyqxmd.com/read/27334512/upper-airway-variation-and-frequent-alcohol-consumption-can-affect-compliance-with-continuous-positive-airway-pressure
#11
Jong In Jeong, Hyo Yeol Kim, Sang Duk Hong, Gwanghui Ryu, Su Jin Kim, Kyung Eun Lee, Hun-Jong Dhong, Seung-Kyu Chung
OBJECTIVES: Compliance with continuous positive airway pressure (CPAP) treatment remains a primary concern for improving treatment outcomes of obstructive sleep apnea. There are few studies that have considered the role of upper airway anatomy on the compliance with CPAP. We hypothesized that upper airway anatomy would influence the compliance with CPAP. METHODS: One hundred out of 161 consecutive patients were enrolled in this study. The following possible determinants were tested against CPAP use: demographic and anthropometric data, minimal cross-sectional area on acoustic rhinometry, cephalometric and polysomnographic data, questionnaires of Epworth sleepiness scale and Beck depression index, and histories of previous upper airway surgery, degree of nasal obstruction, daily cigarette consumption, and weekly frequency of alcohol intake...
December 2016: Clinical and Experimental Otorhinolaryngology
https://www.readbyqxmd.com/read/27300460/premaxillary-repositioning-in-the-severe-form-of-bilateral-cleft-lip-and-palate
#12
Kyung S Koh, Woo Yeon Han, Woo Shik Jeong, Tae Suk Oh, Sun Man Kwon, Jong Woo Choi
Severe forms of bilateral cleft lip and palate remain a challenging issue. Although nasoalveolar molding dramatically improves overall treatment success, the position of the premaxilla often remains dislocated. The authors attempted to relocate the malpositioned premaxilla into the correct position to obtain the correct three-dimensional (3D) maxillary arch structure and growth. Eight patients with severe bilateral cleft lip and palate were treated with premaxillary osteotomy for premaxilla repositioning. The position of the premaxilla was measured directly using cephalometry...
September 2016: Journal of Craniofacial Surgery
https://www.readbyqxmd.com/read/27292527/buccal-mucosa-elasticity-influences-surgical-margin-determination-in-buccal-carcinoma-resection
#13
Pai-Tai Tsai, Yi-Shing Shieh, Chi-Tsung Wu, Shiao-Pieng Lee, Yuan-Wu Chen
PURPOSE: Little is known about whether buccal mucosa elasticity influences the determination of surgical margins for buccal carcinomas. This study investigated whether there is a difference in elasticity of the buccal mucosa in patients with buccal carcinoma compared with controls without the disease. PATIENTS AND METHODS: A case-and-control study comprised of patients with buccal carcinoma and controls without the disease was conducted. In each patient, 2 gutta-percha points were attached to the buccal mucosa horizontally and examined twice by lateral cephalometry, once with the mouth closed and once during maximal mouth opening (MMO)...
September 2016: Journal of Oral and Maxillofacial Surgery
https://www.readbyqxmd.com/read/27272056/differential-treatment-effects-of-two-anchorage-systems-for-rapid-maxillary-expansion-a-retrospective-cephalometric-study
#14
Jan Hourfar, Gero Stefan Michael Kinzinger, Björn Ludwig, Julia Spindler, Jörg Alexander Lisson
OBJECTIVES: The purpose of this study was to compare cephalometric changes resulting from treatment with two appliances for rapid maxillary expansion: (1) a strictly tooth-borne appliance and (2) a combined tooth- and bone-borne appliance. PATIENTS AND METHODS: Pre- and posttreatment lateral cephalograms of 100 patients were analyzed by cephalometry. Of these patients, 50 were treated with strictly tooth-borne and another 50 with combined tooth- and bone-borne appliances...
September 2016: Journal of Orofacial Orthopedics, Fortschritte der Kieferorthopädie
https://www.readbyqxmd.com/read/27225144/assessment-of-gender-dimorphism-on-sagittal-cephalometry-in-pakistani-population
#15
Irfan Qamruddin, Mohammad Khursheed Alam, Fazal Shahid, Sadaf Tanveer, Marvi Mukhtiar, Zainab Asim
OBJECTIVE: To determine and compare the cephalometric values among Pakistani males and females using commonly used sagittal skeletal measurements (ANB, Wits appraisal, Beta-angle) and newly developed cephalometric analyses (Yen-angle and W-angle). STUDY DESIGN: Observational, cross-sectional study. PLACE AND DURATION OF STUDY: Orthodontic Department of Baqai Medical University, Karachi, Pakistan, from August to October 2013. METHODOLOGY: Atotal of 209 pre-treatment lateral cephalometric radiographs of orthodontic patients were selected from departmental records, comprised of 92 males and 117 females...
May 2016: Journal of the College of Physicians and Surgeons—Pakistan: JCPSP
https://www.readbyqxmd.com/read/27208520/the-evaluation-of-a-novel-haptic-enabled-virtual-reality-approach-for-computer-aided-cephalometry
#16
H I Medellín-Castillo, E H Govea-Valladares, C N Pérez-Guerrero, J Gil-Valladares, Theodore Lim, James M Ritchie
BACKGROUND AND OBJECTIVE: In oral and maxillofacial surgery, conventional radiographic cephalometry is one of the standard auxiliary tools for diagnosis and surgical planning. While contemporary computer-assisted cephalometric systems and methodologies support cephalometric analysis, they tend neither to be practical nor intuitive for practitioners. This is particularly the case for 3D methods since the associated landmarking process is difficult and time consuming. In addition to this, there are no 3D cephalometry norms or standards defined; therefore new landmark selection methods are required which will help facilitate their establishment...
July 2016: Computer Methods and Programs in Biomedicine
https://www.readbyqxmd.com/read/27034975/an-innovative-approach-to-evaluate-the-morphological-patterns-of-soft-palate-in-oral-submucous-fibrosis-patients-a-digital-cephalometric-study
#17
Chintamaneni Raja Lakshmi, Dharmavaram Ayesha Thabusum, Sujana Mulk Bhavana
Oral submucous fibrosis (OSMF) is a chronic insidious disease affecting mucosa and submucosa of oral cavity and soft palate. The present study aimed to evaluate the morphology of soft palate in normal individuals and OSMF patients using lateral cephalometry and to compare and correlate these variants of soft palate with different stages of OSMF. 100 subjects were included in the study, who were divided into two groups. Group I included 50 subjects with clinical diagnosis of OSMF and Group II included 50 normal subjects (control group)...
2016: International Journal of Chronic Diseases
https://www.readbyqxmd.com/read/27007754/evaluation-of-mandibular-volume-classified-by-vertical-skeletal-dimensions-with-cone-beam-computed-tomography
#18
Takatoshi Nakawaki, Tetsutaro Yamaguchi, Daisuke Tomita, Yu Hikita, Mohamed Adel, Koshu Katayama, Koutaro Maki
OBJECTIVE:   To investigate the relationship between anteroposterior and vertical differences in maxillofacial morphology and mandibular volume. MATERIALS AND METHODS:   Subjects comprised 213 Japanese adults (84 males and 129 females) who were divided into three groups based on mandibular basal arch (ANB) and Wits, measured in a cephalometric analysis: Class I (-1° ≤ ANB < 4°,-1 mm ≤ Wits < 0 mm), Class II (ANB ≥ 4°, Wits ≥ 0), and Class III (ANB <-1°, Wits <-1 mm)...
March 23, 2016: Angle Orthodontist
https://www.readbyqxmd.com/read/26967073/cephalometric-assessment-of-upper-airway-effects-on-craniofacial-morphology
#19
Mojtaba Mohamadi Ardehali, Varasteh Vakili Zarch, Mohammad-Esmaeil Joibari, Ali Kouhi
To investigate craniofacial growth deformities in children with upper airway obstruction, this controlled study was performed. Cephalometry is used as a screening test for anatomic abnormalities in patients with obstructive sleep apnea syndrome. Therefore, the current work selected this method to investigate the effect of upper airway obstruction on craniofacial morphology.Patients with upper airway obstruction (104) were compared with 71 controls. Patients with upper airway compromise had mandibular hypoplasia, mandibular retrognathism, and higher hard palates in comparison with controls with no history of airway obstruction...
March 2016: Journal of Craniofacial Surgery
https://www.readbyqxmd.com/read/26928929/sonographic-analysis-of-changes-in-skull-shape-after-cranial-molding-helmet-therapy-in-infants-with-deformational-plagiocephaly
#20
Dong Rak Kwon
OBJECTIVES: -The purpose of this study was to investigate the changes in skull shape on sonography after cranial molding helmet therapy in infants with deformational plagiocephaly. METHODS: -Twenty-six infants who were treated with cranial molding helmet therapy were recruited. Caliper and sonographic measurements were performed. The lateral length of the affected and unaffected sides of the skull and cranial vault asymmetry index were measured with calipers. The occipital angle, defined as the angle between lines projected along the lambdoid sutures of the skull, was calculated by sonography...
April 2016: Journal of Ultrasound in Medicine: Official Journal of the American Institute of Ultrasound in Medicine
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