scholarly journals Orthognathic speech pathology: impacts of Class III malocclusion on speech

2021 ◽  
Author(s):  
Hillary Lathrop-Marshall ◽  
Mary Morgan B Keyser ◽  
Samantha Jhingree ◽  
Natalie Giduz ◽  
Clare Bocklage ◽  
...  
Keyword(s):  
Orthognathic Surgery ◽  
Speech Pathology ◽  
Spectral Distortion ◽  
Class Iii ◽  
Class Iii Malocclusion ◽  
Speech Distortion ◽  
Audio Recordings ◽  
Centroid Frequency ◽  
Speech Pathologist ◽  
Insight Into

Summary Introduction Patients with dentofacial disharmonies (DFDs) seek orthodontic care and orthognathic surgery to address issues with mastication, esthetics, and speech. Speech distortions are seen 18 times more frequently in Class III DFD patients than the general population, with unclear causality. We hypothesize there are significant differences in spectral properties of stop (/t/ or /k/), fricative (/s/ or /ʃ/), and affricate (/tʃ/) consonants and that severity of Class III disharmony correlates with the degree of speech abnormality. Methods To understand how jaw disharmonies influence speech, orthodontic records and audio recordings were collected from Class III surgical candidates and reference subjects (n = 102 Class III, 62 controls). A speech pathologist evaluated subjects and recordings were quantitatively analysed by Spectral Moment Analysis for frequency distortions. Results A majority of Class III subjects exhibit speech distortions. A significant increase in the centroid frequency (M1) and spectral spread (M2) was seen in several consonants of Class III subjects compared to controls. Using regression analysis, correlations between Class III skeletal severity (assessed by cephalometric measures) and spectral distortion were found for /t/ and /k/ phones. Conclusions Class III DFD patients have a higher prevalence of articulation errors and significant spectral distortions in consonants relative to controls. This is the first demonstration that severity of malocclusion is quantitatively correlated with the degree of speech distortion for consonants, suggesting causation. These findings offer insight into the complex relationship between craniofacial structures and speech distortions.

scholarly journals Orthodontic camouflage of skeletal Class III malocclusion with miniplate: a case report

2016 ◽  
Vol 21 (4) ◽  
pp. 89-98 ◽  
Author(s):  
Marcel Marchiori Farret ◽  
Milton M. Benitez Farret ◽  
Alessandro Marchiori Farret
Keyword(s):  
Orthognathic Surgery ◽  
Class Iii ◽  
Class Iii Malocclusion ◽  
Lower Lip ◽  
Facial Profile ◽  
Skeletal Class ◽  
Mandibular Teeth ◽  
One Year ◽  
Angle Class Iii Malocclusion

ABSTRACT Introduction: Skeletal Class III malocclusion is often referred for orthodontic treatment combined with orthognathic surgery. However, with the aid of miniplates, some moderate discrepancies become feasible to be treated without surgery. Objective: To report the case of a 24-year-old man with severe skeletal Angle Class III malocclusion with anterior crossbite and a consequent concave facial profile. Methods: The patient refused to undergo orthognathic surgery; therefore, orthodontic camouflage treatment with the aid of miniplates placed on the mandibular arch was proposed. Results: After 18 months of treatment, a Class I molar and canine relationship was achieved, while anterior crossbite was corrected by retraction of mandibular teeth. The consequent decrease in lower lip fullness and increased exposure of maxillary incisors at smiling resulted in a remarkable improvement of patient's facial profile, in addition to an esthetically pleasing smile, respectively. One year later, follow-up revealed good stability of results.

Orthognathic Surgery for Correction of Skeletal Class III Malocclusion Using Osseointegrated Dental Implants: A Clinical Case Letter

2020 ◽  
Vol 46 (2) ◽  
pp. 146-152
Author(s):  
Peer W. Kämmerer ◽  
Jens M. Wolf ◽  
Michael Dau ◽  
Henning Staedt ◽  
Bilal Al-Nawas ◽  
...  
Keyword(s):  
Dental Implants ◽  
Orthognathic Surgery ◽  
Clinical Case ◽  
Class Iii ◽  
Class Iii Malocclusion ◽  
Skeletal Class

scholarly journals Modern trends in Class III orthognathic treatment: A time series analysis

2016 ◽  
Vol 87 (2) ◽  
pp. 269-278 ◽  
Author(s):  
Chang-Hoon Lee ◽  
Hyun-Hee Park ◽  
Byoung-Moo Seo ◽  
Shin-Jae Lee
Keyword(s):  
Time Series ◽  
Time Series Analysis ◽  
Orthognathic Surgery ◽  
Orthodontic Treatment ◽  
Treatment Time ◽  
Class Iii ◽  
Class Iii Malocclusion ◽  
Time Of Surgery ◽  
Series Analysis ◽  
Before And After

ABSTRACT Objective: To examine the current trends in surgical-orthodontic treatment for patients with Class III malocclusion using time-series analysis. Materials and Methods: The records of 2994 consecutive patients who underwent orthognathic surgery from January 1, 2004, through December 31, 2015, at Seoul National University Dental Hospital, Seoul, Korea, were reviewed. Clinical data from each surgical and orthodontic treatment record included patient's sex, age at the time of surgery, malocclusion classification, type of orthognathic surgical procedure, place where the orthodontic treatment was performed, orthodontic treatment modality, and time elapsed for pre- and postoperative orthodontic treatment. Results: Out of the orthognathic surgery patients, 86% had Class III malocclusion. Among them, two-jaw surgeries have become by far the most common orthognathic surgical treatment these days. The age at the time of surgery and the number of new patients had seasonal variations, which demonstrated opposing patterns. There was neither positive nor negative correlation between pre- and postoperative orthodontic treatment time. Elapsed orthodontic treatment time for both before and after Class III orthognathic surgeries has been decreasing over the years. Conclusion: Results of the time series analysis might provide clinicians with some insights into current surgical and orthodontic management.

scholarly journals Nasal changes after orthognathic surgery for patients with prognathism and Class III malocclusion: Analysis using three-dimensional photogrammetry

2015 ◽  
Vol 114 (2) ◽  
pp. 112-123 ◽  
Author(s):  
Saran Worasakwutiphong ◽  
Ya-Fang Chuang ◽  
Hsin-Wen Chang ◽  
Hsiu-Hsia Lin ◽  
Pei-Ju Lin ◽  
...  
Keyword(s):  
Orthognathic Surgery ◽  
Three Dimensional ◽  
Class Iii ◽  
Class Iii Malocclusion ◽  
Nasal Changes

An Oral Health-Related Quality of Life Comparison Between Adults With Unilateral Cleft Lip and Palate and Class III Malocclusion

2019 ◽  
Vol 56 (10) ◽  
pp. 1359-1365
Author(s):  
Leandro Almeida Nascimento Barros ◽  
Flávia Aline Silva Jesuino ◽  
João Batista de Paiva ◽  
José Rino-Neto ◽  
José Valladares-Neto
Keyword(s):  
Oral Health ◽  
Orthognathic Surgery ◽  
Cleft Lip ◽  
Cleft Lip And Palate ◽  
Health Related Quality ◽  
Class Iii ◽  
Class Iii Malocclusion ◽  
Related Quality ◽  
Health Related

Objective: To compare oral health-related quality of life (OHRQoL) before treatment of adults with unilateral cleft lip and palate (UCLP) and surgical Class III malocclusion, and to consider if clefts needing different orthodontic treatment protocols could influence people’s self-perception. Design: Cross sectional. Setting: Cleft Lip and Palate Center and Clinic of Orthognathic Surgery from a School of Dentistry. Participants: A sample of adults with repaired nonsyndromic UCLP (n = 52) which was age- and sex-matched with a noncleft Class III malocclusion sample seeking orthognathic surgery (n = 51). In turn, the cleft group was subdivided according to treatment planning into nonsurgical orthodontic and surgical orthodontic approaches. Main Outcome Measure: The whole sample was assessed using the short-form oral health impact profile (OHIP-14), with higher scores indicating a poorer OHRQoL. Statistical comparisons were performed with Mann-Whitney U and Kruskal-Wallis tests, and effect size. Bonferroni adjustment was used for post hoc tests ( P < .017). Results: The OHIP-14 scores of the UCLP and Class III groups were significantly different ( P = .001, η2 = 0.108), and higher in Class III. The largest commitment was in the physical disability, physical pain, and psychological disability domains. In addition, no differences were found when the UCLP treatment planning was considered. Conclusion: Surgical Class III malocclusion have a poorer OHRQoL when compared to patients with UCLP, irrespective of whether they are treated surgically or orthodontically. Therefore, the greater commitment of OHRQoL appears to be influenced by the etiology of Class III, and not by treatment plan.

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