Mandibular Advancement Planning Based on Clinical Overjet

N/ANot Yet RecruitingNCT06653075

IRCCS Ospedale San Raffaele50 enrolled

Overview

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

Study Type

INTERVENTIONAL

Allocation

NON_RANDOMIZED

Purpose

TREATMENT

Masking

SINGLE

Enrollment

Conditions

Overjet Class II Division 1 Malocclusion

Interventions

Eligibility

Sex: ALLMin age: 6 YearsMax age: 50 YearsHealthy volunteers:

Medical Language ↔ Plain English

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

Outcomes

Primary Outcomes

Planned mandibular advancement (mm)

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

Time frame: 1 year

Secondary Outcomes

Obtained mandibular advancement (mm)

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