Duration Of Lower Labial Segment Alignment With Repeated Micro-Osteoperforations:

Duration Of Lower Labial Segment Alignment With Repeated Micro-Osteoperforations: Randomised Controlled Clinical Trial

The main purpose is to compare overall alignment time (OAT) in days in alleviating mandibular incisors crowding between control group and MOPs group.Furthermore, to investigate the presence of volumetric root resorption from CBCT, gingival recession and formation of black triangle post lower labial segment alignment between micro-osteoperforations group and control group.

Prolonged treatment time in orthodontics is an undesirable side effect for both the patient and clinician. Usually, an average course of comprehensive orthodontic treatment with fixed appliances requires less than 2 years to complete (19.9 months). This prolonged treatment time may cause adverse effects such as root resorption, gingival recession, caries & enamel demineralization. Micro-osteoperforations is safe, minimally invasive technique which perforations are performed through the gum tissues, penetrating the bone without the need to raise a flap.Control group will not received any MOP and will receive standard orthodontic treatment.

Inclusion Criteria:

• Gender : Male and Female
• Age range : ≥ 18years to 45 years old
• Crowding of 3mm - 7mm on lower labial segment (lower right canine to lower left canine) which does not require extractions in the lower arch
• Class II div I Incisor relationship with extraction of both upper 1st premolars
• Maximum anchorage control with temporary anchorage device ( TAD) , with Molar Class II (¼ to full unit) malocclusion
• Average vertical facial proportions
• No systemic disease
• Acceptable good oral hygiene
• No periodontal disease

Exclusion Criteria:

• Smokers
• Distally angulated canines
• History of trauma (crown fracture or avulsion and re-implantation) , endodontic treatment
• Missing permanent mandibular anterior teeth ( Hypodontia) / Retained deciduous teeth in mandibular anterior area
• Habits eg: fingernails biting , toothpick user , using hard toothbrush
• Vertical skeletal discrepancies eg high angle and low angle
• Systemic disease especially on long term use of antibiotics, phenytoin, cyclosporin, anti-inflammatory drugs, systemic corticosteroid and calcium channel blockers
• Poor oral hygiene for more than 3 visits
• Current periodontal disease