Cephalometric evaluation of the Twin-block appliance in the treatment of Class II Division 1 malocclusion with matched normative growth data

Trenouth, M. J.

doi:10.1016/s0889-5406(00)70248-4

Cited by 75 publications

(90 citation statements)

References 26 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…The upper incisors showed significant retroclination (1/NA= 3.29 mm, 9.71°); the lower incisors, proclination (1/NB= 2.82°) and the interincisal angle, an increase (1/1= 7.75°) and these results are in accordance with other authors 7,8,10,11 who have reported similar findings. The effect on the upper incisors can be mainly attributed to the Hawley arch (Fig 4B) which transmitted a reaction force to the upper incisors.…”

Section: Resultssupporting

confidence: 91%

“…Previous studies have reported an anterior mandibular displacement related to the anterior cranial base as a result of TB treatment, which means that the mandible was spatially altered in the anteroposterior plane resulting in a correction of Class II malocclusion (Table 3). 7,8,10,11,16 A significant increase in mandibular length (Co-Gn=2.4 mm) was observed as well as a significant reduction in intermaxillary sagittal discrepancy (ANB = -1.18°; NA/APog = -2.38°; AO-BO= -4.04 mm), which probably contributed to the Class II correction (Table 3). An increase in total mandibular length was also found by Morris et al 6 (3.2 mm/year).…”

Section: Resultsmentioning

confidence: 95%

“…5 The Twin Block (TB) appliance is used to promote correction of Class II mandibular deficiency malocclusions. A number of authors [6][7][8][9][10][11] have already discussed its effectiveness on mandibular changes, overjet and Class II correction in European and American sample, but different populations may have different results using the same appliance.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Alterações dentoesqueléticas decorrentes do tratamento com aparelho ortopédico funcional Twin Block em pacientes portadores de má oclusão de Classe II esquelética

Vieira

Brunharo

Mendes

et al. 2011

Dental Press J. Orthod.

View full text Add to dashboard Cite

Objective: This prospective clinical study evaluated dentoskeletal changes in Class II malocclusion patients after treatment with the Twin Block functional appliance (TB). Method: The sample was divided into two groups with 19 subjects in each: Group TB, with mean age of 9 years and 6 months (sd = 10 months); and a control group, with mean age of 9 years and 9 months (sd =13 months), both situated before the pubertal growth spurt. Unpaired Student's t test showed the sample homogeneity at the beginning of the study. Initial (T1) and one year follow-up (T2) cephalometric radiographs were obtained for all subjects. Wilcoxon test and Mann-Whitney test were used to evaluate changes intra and intergroups from T1 to T2. Results: A Class I molar relationship was achieved in 15 subjects of the TB group, while no modification occurred in the control group. No significant effect was observed either in the maxilla or in the vertical pattern. A significant increase in total mandibular length and an anterior displacement of the mandibular position occurred in the treated group (p<0.05) as well as an overjet reduction, influenced by significant upper incisor retroclination and lower incisor proclination (p<0.05). Conclusions: Class II treatment with the Twin Block appliance in Brazilian patients showed skeletal and dental effects, including increase in mandibular length and incisors compensation, respectively. AbstractKeywords: Class II malocclusion. Functional appliance. Growth.

show abstract

Section: Resultssupporting

confidence: 91%

Section: Resultsmentioning

confidence: 95%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Alterações dentoesqueléticas decorrentes do tratamento com aparelho ortopédico funcional Twin Block em pacientes portadores de má oclusão de Classe II esquelética

Vieira

Brunharo

Mendes

et al. 2011

Dental Press J. Orthod.

View full text Add to dashboard Cite

show abstract

“…1,[4][5][6][9][10][11][12] The main aim of this study was to compare the effect on treatment response of incorporating a maxillary labial bow in the core CTB appliance design in a matched sample of Class II division 1 subjects. Both appliance designs were effective in producing complete or partial correction of the overjet during the period of observation.…”

Section: Discussionmentioning

confidence: 99%

“…3 However, in an attempt to reduce incisor retroclination and to maximize skeletal effects of the appliance, many clinicians choose to omit this component. Alternative modifications have been investigated in an attempt to promote skeletal change and limit dentoalveolar movements, including torquing spurs on the upper incisors, 4 Southend clasps, 5 and the addition of headgear. 6 To date, no direct investigations have explored the overall effects of the upper labial bow on the outcome of CTB therapy.…”

Section: Introductionmentioning

confidence: 99%

Use of the Clark Twin Block functional appliance with and without an upper labial bow: a randomized controlled trial

Yaqoob

DiBiase

Fleming

et al. 2012

The Angle Orthodontist

View full text Add to dashboard Cite

Objectives: To compare dentoalveolar and skeletal changes in two groups of Class II division 1 patients treated with different designs of Clark's Twin Block (CTB), with (Group 1) or without (Group 2) an upper labial bow. Materials and Methods: A randomized controlled trial was conducted in the Department of Orthodontics at the East Kent Hospitals University NHS Foundation Trust, UK. Sixty-two white subjects (aged 10-14 years at the start of treatment, minimum overjet . 6 mm, molar relationship at least ½ unit Class II) were recruited. Subjects were divided into age-and sex-matched pairs, were randomly allocated to treatment with either appliance design, and were treated for 12 months, at which time additional data were collected. Results: Sixty participants were available for final data collection. The two groups were well matched with respect to age (mean 12.5 years in Group 1; 12.3 years in Group 2). No statistical difference was noted between groups for any dentoalveolar or skeletal variables measured. Both groups experienced a reduction in overjet as a result of maxillary incisor retroclination, mandibular incisor proclination, and forward positioning of the pogonion. Maxillary molar distalization, mandibular molar mesialization, and ANB reduction also occurred in both groups. Conclusions: The addition of a maxillary labial bow to the CTB has no influence on dentoalveolar or skeletal changes, or on rate of overjet reduction, in relation to appliance therapy. (Angle Orthod.

show abstract

Functional appliances

2016

Orthodontic Functional Appliances

View full text Add to dashboard Cite

Cephalometric evaluation of the Twin-block appliance in the treatment of Class II Division 1 malocclusion with matched normative growth data

Cited by 75 publications

References 26 publications

Alterações dentoesqueléticas decorrentes do tratamento com aparelho ortopédico funcional Twin Block em pacientes portadores de má oclusão de Classe II esquelética

Alterações dentoesqueléticas decorrentes do tratamento com aparelho ortopédico funcional Twin Block em pacientes portadores de má oclusão de Classe II esquelética

Use of the Clark Twin Block functional appliance with and without an upper labial bow: a randomized controlled trial

Functional appliances

Contact Info

Product

Resources

About