Correcting the skeletal class II using functional appliances, whether removable or fixed, always leads to skeletal and alveolar effects. However, some of these effects are unfavorable, the most significant being the loss of support in the lower dental arch. This loss of support leads to an uncontrolled labial inclination of the lower incisors and mesial movement of the lower; these dentoalveolar effects impact the degree of skeletal correction that can be achieved. Therefore, this study aimed to evaluate the skeletal and dentoalveolar effects following the use of a mini-implant-supported Twin-Block appliance compared to the conventional Twin-Block.
Age range
10 Years – 13 Years
Sex
ALL
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A starting point for the conversation — always confirm anything about your own eligibility, costs, and care with the study team and your doctor.
Change in the overjet
Timeframe: T0: One day before the beginning of the functional treatment, T1: After completing functional treatment which which is expected within 11 months.
Change in the overbite
Timeframe: T0: One day before the beginning of the functional treatment, T1: After completing functional treatment which which is expected within 11 months.
Change in the molar relationship
Timeframe: T0: One day before the beginning of the functional treatment, T1: After completing functional treatment which which is expected within 11 months.
Change in the position of the maxillary base
Timeframe: T0: One day before the beginning of the functional treatment, T1: After completing functional treatment which which is expected within 11 months.
Change in the position of the mandibular base
Timeframe: T0: One day before the beginning of the functional treatment, T1: After completing functional treatment which which is expected within 11 months.
Change in the mandibular position relative to the upper jaw
Timeframe: T0: One day before the beginning of the functional treatment, T1: After completing functional treatment which which is expected within 11 months.
Change in condylar head position
Timeframe: T0: One day before the beginning of the functional treatment, T1: After completing functional treatment which which is expected within 11 months.
Change in the composite mandibular length
Timeframe: T0: One day before the beginning of the functional treatment, T1: After completing functional treatment which which is expected within 11 months.
Change in position of the maxillary incisor
Timeframe: T0: One day before the beginning of the functional treatment, T1: After completing functional treatment which which is expected within 11 months.
Change in position of the mandibular incisor
Timeframe: T0: One day before the beginning of the functional treatment, T1: After completing functional treatment which which is expected within 11 months.
Change in position of the maxillary permanent first molar
Timeframe: T0: One day before the beginning of the functional treatment, T1: After completing functional treatment which which is expected within 11 months.
Change in position of the mandibular permanent first molar
Timeframe: T0: One day before the beginning of the functional treatment, T1: After completing functional treatment which which is expected within 11 months.
Change in the ramus height
Timeframe: T0: One day before the beginning of the functional treatment, T1: After completing functional treatment which which is expected within 11 months.
Change in the corpus length
Timeframe: T0: One day before the beginning of the functional treatment, T1: After completing functional treatment which which is expected within 11 months.
Change in MM angle
Timeframe: T0: One day before the beginning of the functional treatment, T1: After completing functional treatment which which is expected within 11 months.
Change in the SN-OP
Timeframe: T0: One day before the beginning of the functional treatment, T1: After completing functional treatment which which is expected within 11 months.
Change in the SN-MP
Timeframe: T0: One day before the beginning of the functional treatment, T1: After completing functional treatment which which is expected within 11 months.
Change in the Bjork sum (N-S-Ar + S-Ar-Go +Ar-Go-Me)
Timeframe: T0: One day before the beginning of the functional treatment, T1: After completing functional treatment which which is expected within 11 months.
Change in the inclination of the upper incisors.
Timeframe: T0: One day before the beginning of the functional treatment, T1: After completing functional treatment which which is expected within 11 months.
Change in the L1-MP angle
Timeframe: T0: One day before the beginning of the functional treatment, T1: After completing functional treatment which which is expected within 11 months.