Mandibular changes during functional appliance treatment

Nelson, Colin; Harkness, Michael; Herbison, Peter

doi:10.1016/s0889-5406(05)81005-4

Cited by 148 publications

(94 citation statements)

References 22 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…This result was in agreement with several authors [8,16], who found no evidence of increased facial height during treatment with various functional appliances. There were no significant differences between the removable and fixed appliance groups, which suggest that increase in the skeletal vertical dimension should be related to growth rather than to treatment with different types of functional orthopedics [17].…”

Section: Skeletal Changessupporting

confidence: 94%

See 1 more Smart Citation

Effects of Functional Appliance Therapy on the Depth of the Pharyngeal Airways: Activator vs. Forsus

Taki¹

2015

JDHODT

View full text Add to dashboard Cite

The sample consisted of 25 adolescents (14 boys and 11 girls, average age 11 years 8 months), whose lateral cephalograms taken before (T 1 ) and after the treatment (T 2 ) with functional appliances (total 50) were collected. The lateral cephalometric radiographs were compiled from their clinical records kept at Research Article AbstractAims: The aim of this study was to evaluate the changes in Dento-skeletal components following orthopedic therapy of Class II skeletal malocclusions, and to assess the effect of these changes on the depth of the pharyngeal airways, after treatment with removable and fixed functional appliances.Methodology: 25 adolescents (14 boys and 11 girls, mean age 11.67 years) were chosen. The subjects were divided into two groups according to the treatment type: removable appliance group (13 subjects, 7 boys and 6 girls, mean age 12 years) and fixed appliance group (12 subjects, 7 boys and 5 girls, mean age 11.33 years). Lateral cephalometric radiographs taken before (T1) and after the treatments (T2) were digitally analyzed. Paired t-test was used to determine the possible statistically significant changes (T2-T1) for both groups. Identified differences between the groups were further analyzed using the Mann-Whitney U-test at the 95% confidence interval (P <.05).Results: Functional appliance therapy showed no statistically significant changes in upper pharyngeal airway depth (UPAD) and middle pharyngeal airway depth (MPAD). Only the lower pharyngeal airway depth (LPAD) was increased significantly (P<.05) due to the forward positioning of the mandible, determined by significant increase in SNB, ANB, and Pog to N perp. Intergroup comparisons showed no statistically significant differences between removable and fixed appliances (P >.05). Conclusion:Positive sagittal mandibular change, as a result of both types of functional appliances therapy, had a significant increase on the depth of the lower pharyngeal airway. The sample was then divided into two groups. The first group consisted of the subjects who were treated with removable functional appliances (Activator type), and the second group consisted of those who were treated with fixed functional appliances, Forsus Fatigue Resistant Device (FRD) (3M Unitek Corp, Monrovia, Calif).The sex and age distribution of the treatment groups are shown in Table 1. Although chronological ages appear different between groups, growth stages were closely matched according to cervical vertebra maturation (CVM) assessment on lateral cephalograms. Keywords:The removable appliance group comprised of 13 subjects (7 boys and 6 girls, mean age 12 years), with the duration of treatment ranging from 6 to 15 months with an average of 11.6 months.The activator appliance used was an acrylic monobloc with clasps used to fixate the appliance to the upper first molars. The appliance was produced from a construction bite that positioned the mandible anteriorly in an edge-to-edge incisal relationship. The lower jaw was postured forward in a Class I or overcorrected Class I ...

show abstract

Section: Skeletal Changessupporting

confidence: 94%

“…A controversy still exists among numerous authors as to whether the changes are purely skeletal [6,7], purely dentoalveolar [8], or a combination of both [9].…”

Section: Introductionmentioning

confidence: 99%

Effects of Functional Appliance Therapy on the Depth of the Pharyngeal Airways: Activator vs. Forsus

Taki¹

2015

JDHODT

View full text Add to dashboard Cite

show abstract

“…[2][3][4][5][6][7] In an early study reporting the outcome of treatment for 264 consecutively treated patients, 111 of whom were classified as Class II, Division 1, Berg 8 highlighted the fact that not all orthodontic treatment is equally successful. In his sample, close to 50% of the patients were judged to have less than satisfactory treatment outcomes, with an approximately 30% probability of failure to eliminate an increased overjet (OJ).…”

mentioning

confidence: 99%

Surgical versus orthodontic correction for class II patients: age and severity in treatment planning and treatment outcome

Tulloch

Lenz

Phillips

1999

Seminars in Orthodontics

View full text Add to dashboard Cite

Treatment options for Class II malocclusion include orthognathic surgery. Treatment choices are particularly difficult for young patients because of the uncertainty regarding future growth. Surgical treatment has generally been considered necessary for older patients with more severe Class II problems. The treatment records of more than 500 patients with Class II malocclusion were reviewed. Patients were grouped according to their initial treatment plan (surgery or orthodontics) and treatment outcome (overjet [OJ] reduced to <4 mm or not). Discriminant function analyses using data from the patient's pretreatment cephalogram were used to determine whether age, in combination with malocclusion severity, could predict the choice of treatment, and whether a simple set of pretreatment variables could predict the success or failure of OJ reduction. The derived equations were tested in a similar group of growing Class II children. Although the data showed clinicians use patient's age in determining treatment choice, age did not seem to be associated with treatment outcome. The majority of the variability that determined the success or failure of OJ reduction was not explained by patient's age or malocclusion severity. These findings suggest other factors, including psychosocial variables, need to be explored if we are to gain a better understanding of why treatments succeed or fail.

show abstract

“…Discordando dos resultados da presente pesquisa, outros autores VARGERVIK, 1971;HASHIM, 1991;NELSON, C.;HERBISON, 1993;PANCHERZ, 1984;HARVOLD, 1985) não evidenciaram um incremento mandibular resultante do tratamento com o Bionator de Balters.…”

Section: Componente Mandibularunclassified

“…;ZIAJA, 1989;BOLMGREN;MOSHIRI, 1986;CHANG et al, 1989;COURTNEY;CURA et al, 1996;DRAGE;HUNT, 1990;FREITAS, B.V., 1996;HENRIQUES, 1997, JANSON, I., 1977, 1978HASUND, 1981, MILLS, J.R., 1991, PANCHERZ, 1984, REMMER et al, 1985BURGIN, 1989 CHANG et al, 1989;DRAGE;HUNT, 1990;HENRIQUES, 1997;JANSON, I., 1977JANSON, I., , 1978HASUND, 1981;NELSON, C.;HERBISON, 1993;PANCHERZ, 1984;THUER;BURGIN, 1989;TSAMTSOURIS;VEDRENNE, 1983) Assim como em alguns estudos (CHIQUETO, 2008;COPE et al, 1994;COVELL et al, 1999;KARACAY et al, 2006;KUCUKKELES;ILHAN;ORGUN, 2007;NALBANTGIL et al, 2005;PANCHERZ, 1999;STUCKI;INGERVALL, 1998), o trespasse vertical foi melhorado pela terapêutica adotada …”

Section: Componente Dentoalveolar Superiorunclassified

Estabilidade da correção da Classe II, 1ª divisão com o aparelho Bionator de Balters associado ao aparelho fixo

Francisconi¹

View full text Add to dashboard Cite

Mandibular changes during functional appliance treatment

Cited by 148 publications

References 22 publications

Effects of Functional Appliance Therapy on the Depth of the Pharyngeal Airways: Activator vs. Forsus

Effects of Functional Appliance Therapy on the Depth of the Pharyngeal Airways: Activator vs. Forsus

Surgical versus orthodontic correction for class II patients: age and severity in treatment planning and treatment outcome

Estabilidade da correção da Classe II, 1ª divisão com o aparelho Bionator de Balters associado ao aparelho fixo

Contact Info

Product

Resources

About