Long-term stability of rapid maxillary expansion combined with chincup protraction followed by fixed appliances

Palma, Juan Carlos; Tejedor-Sanz, Natalia; Oteo, Marta; Alarcón, José Antonio

doi:10.2319/012514-68.1

Cited by 7 publications

(10 citation statements)

References 29 publications

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“…Massucci et al [22] observed 73%, Wells et al [34] 75%, Westwood et al [18] 76%, and Ngan et al 75% [35]. In a previous study that only included females, we found a success rate of 81.8% [12]. A reason for the high percentage of stable cases in our sample could be due to the fact that the mandibular plane remained unchanged during treatment.…”

Section: Discussionmentioning

confidence: 52%

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Sexual dimorphism in the long-term stability (10 years) of skeletal Class III treatment

et al. 2021

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Background Class III malocclusion is associated with high sexual dimorphism, especially in individuals older than 13 years of age, with significant differences in growth between males and females during the pubertal and postpubertal stages, and in adulthood. The aim of this research was to examine differences between males and females in long-term stability (10 years) of treatment for skeletal Class III malocclusion. Methods Thirty patients (15 males and 15 females) with skeletal Class III malocclusion, who had been treated with rapid maxillary expansion (RME) combined with face mask protraction followed by fixed appliances, were selected sequentially. Thirty patients (15 males and 15 females) with skeletal Class I and mesofacial patterns treated only with fixed appliances for dental problems served as the control group. Differences between groups and sexes were evaluated using lateral cephalograms taken at the start of treatment (T0), immediately after the end of treatment (T1), and after 10 years (T2). The long-term treatment success rate was calculated. Results Ten years after Class III treatment, overjet and overbite relapse occurred similarly in females (− 0.68 ± 0.7 mm; − 0.38 ± 0.75 mm, respectively) and males (− 1.09 ± 1.47 mm; − 0.64 ± 0.9 mm, respectively); the ANB angle and Wits appraisal became significantly more negative in males (− 1.37 ± 1.06°; − 2.7 ± 2.53 mm) than in females (− 0.18 ± 1.26°; − 0.46 ± 1.94 mm). The success rate was 73.3% in males and 80% in females. Conclusions Significant differences in the long-term stability of Class III treatment outcomes have been found between males and females, with a larger skeletal Class III relapse and lower long-term success rates in males.

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Section: Discussionmentioning

confidence: 52%

“…Short-term stability of Class III malocclusion treatment has been widely studied; however, very few studies have focused on the long-term stability of outcomes [12]. Most studies describe the outcomes obtained once the orthopaedic treatment has ended [6,[13][14][15][16] or after a second phase with fixed appliances [4,5,17,18].…”

Section: Introductionmentioning

confidence: 99%

Sexual dimorphism in the long-term stability (10 years) of skeletal Class III treatment

et al. 2021

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“…In previous studies retention has been recommended after overjet and overbite correction from three months to two years during the night [ 24 , 89 , 90 ]. Long-term follow-ups of maxillary protraction indicate a 25–33% chance of relapse to negative overjet after the completion of mandibular growth [ 30 , 67 , 91 , 92 ].…”

Section: Discussionmentioning

confidence: 99%

Treatment Options for Class III Malocclusion in Growing Patients with Emphasis on Maxillary Protraction

Azamian

Shirban

2016

Scientifica

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It is very difficult to diagnose and treat Class III malocclusion. This type of malocclusion involves a number of cranial base and maxillary and mandibular skeletal and dental compensation components. In Class III malocclusion originating from mandibular prognathism, orthodontic treatment in growing patients is not a good choice and in most cases orthognathic surgery is recommended after the end of growth. Approximately 30–40% of Class III patients exhibit some degree of maxillary deficiency; therefore, devices can be used for maxillary protraction for orthodontic treatment in early mixed dentition. In cases in which dental components are primarily responsible for Class III malocclusion, early therapeutic intervention is recommended. An electronic search was conducted using the Medline database (Entrez PubMed), the Cochrane Collaboration Oral Health Group Database of Clinical Trials, Science Direct, and Scopus. In this review article, we described the treatment options for Class III malocclusion in growing patient with an emphasis on maxillary protraction. It seems that the most important factor for treatment of Class III malocclusion in growing patient is case selection.

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“…9 This medical system is working with applied orthodontic force to the maxilla anteriorly during 12-14 hours per day.…”

Section: Discussionmentioning

confidence: 99%

A methodological study on improving a new orthodontic face mask

Özkalaycı¹,

Yetmez²

2017

Yeditepe J Dent

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SUMMARY Introduction:The aim of this study is to present and evaluate a new monitoring system attached to forehead part of face mask for tracking orthodontic face mask usage time and regularity. Methods:The new monitoring system consists of three main parts as main body, slot cover and sensor. The main body includes two lateral fixer, a median fixer, sensor insertion slot and eight screw holes. After completing the assembly procedure for the main part, the sensor is programmed and inserted to its slot and then the cover is screwed. The system was tested under laboratory condition. Results: Detailed analysis of the post study data showed that the system measured the attachment and detachment period correctly. The new type orthodontic face mask can monitor the wearing time and regularity. Conclusion: Face mask therapy is a crucial for correction of sagittal maxillary deficiency. Total wearing time and regularity is main factors to reach to a success level of this orthodontic and orthopedic treatment. Objective and scientific monitoring system proposed here may help the clinicians for difficult, long and expensive treatment. Conclusion of present study show that the system proposed is suitable for the further face mask usage.

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Long-term stability of rapid maxillary expansion combined with chincup protraction followed by fixed appliances

Cited by 7 publications

References 29 publications

Sexual dimorphism in the long-term stability (10 years) of skeletal Class III treatment

Sexual dimorphism in the long-term stability (10 years) of skeletal Class III treatment

Treatment Options for Class III Malocclusion in Growing Patients with Emphasis on Maxillary Protraction

A methodological study on improving a new orthodontic face mask

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