Evaluation of Pain, Discomfort and Acceptance During the Orthodontic Treatment of Class III Malocclusion
Class III Malocclusion, Cross Bite, Orthodontic Appliance Complication
About this trial
This is an interventional treatment trial for Class III Malocclusion focused on measuring Removable Mandibular Retractor, Bone-anchored Intermaxillary Traction
Eligibility Criteria
Inclusion Criteria:
- Class III malocclusion according to Angle
- Presence of anterior cross bite on two teeth or more
- Class III Skeletal relationship confirmed radiographically (-4<ANB<+1)
- The lower incisors have normal inclination (Incisor-Mandibular-Plane angle not exceeding 100° and not less than 85°)
- Late mixed dentition or the beginning of the permanent dentition
- Eruption of The lower canines and first premolars on both sides
- Absence of craniofacial syndromes or cleft lip and/or palate abnormalities
- no supernumerary teeth or missing teeth except for the third molars
- no previous orthodontic treatment
Exclusion Criteria:
- Pure maxillary deficiency
- Pure mandibular prognathism
- Diseases that prevent the application of mini-implants (e.g. Osteoporosis- cortisone and its derivatives treatment - radiation)
- The roots of the canine are so close to the first premolar
- Long face (Maxillary-mandibular plane angle greater than 30° or Mandibular-Cranial-Base angle greater than 36°).
Sites / Locations
- Orthodontic Department, University of Hama Dental School
Arms of the Study
Arm 1
Arm 2
Active Comparator
Experimental
Removable Mandibular Retractor
Bone-anchored intermaxillary Traction
Patients in this group will be treated by the Removable Mandibular Retractor (RMR) in order to get rid of the anterior cross bite. This appliance is removable.
Patients will be treated using bone-anchored intermaxillary traction. Class III elastics will be extended from the Adam's clasps placed in the upper removable appliance towards the heads of mini-implants placed between the permanent canine and lateral incisors on either side of the lower dental arch.