Class II Division 1 Malocclusion, Overjet
Conditions
Brief summary
This Prospective study aims to simulate the maximum mandibular advancement in class II patients treated by Herbst MTH Appliance on the base on clinical overjet. Initial intraoral scans will be uploaded in Suresmile software, the upper incisors will be virtually aligned and the mandible will be advancement until an anterior occlusal contact will be reached. This virtual advancement will be compared to the real advancement obtained at the end of the Herbst phase. This protocol will be applied to two groups: one with traditional dental occlusion, the second one with Skeletal anchorage reinforcement and elastic chains
Interventions
PROCEDUREmandibular advancement with acrylic splint Herbst Appliance
Mandibular advancement with acrylic splint Herbst Appliance
Sponsors
IRCCS Ospedale San Raffaele
Study design
Allocation
NON_RANDOMIZED
Intervention model
PARALLEL
Primary purpose
TREATMENT
Masking
SINGLE (Subject)
Eligibility
Sex/Gender
ALL
Age
6 Years to 50 Years
Healthy volunteers
Yes
Inclusion criteria
* ANB\>=4° * Overjet \>=4 mm * Class II malocclusion ( bilateral class II molar relation, at least half a cusp)
Exclusion criteria
* tooth agenesis * poor oral hygiene * previous orthodontic treatments * systemic disease or bone pathology
Design outcomes
Primary
| Measure | Time frame | Description |
|---|---|---|
| Planned mandibular advancement (mm) | 1 year | The planned mandibular advancement will be evaluated on the STL of the arches by simulating a sagittal mandibular advancement , until an anterior occlusal contact will be reached |
Secondary
| Measure | Time frame | Description |
|---|---|---|
| Obtained mandibular advancement (mm) | 1 year | The obtained mandibular advancement will be evaluated comparing the Sagittal position of the Pogonion (according to cephalometric pancherz's analysis) on the lateral ceph before and after the treatment |
Countries
Italy
Contacts
Primary ContactAndrea Boggio, DDS, PhD
Outcome results
None listed