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CLASS II DIVISION 1 MALOCCLUSION clinical trials

View clinical trials related to CLASS II DIVISION 1 MALOCCLUSION.

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NCT ID: NCT06133361 Completed - Clinical trials for Class II Division 1 Malocclusion

The Effect of Platelet-rich Plasma on the Rate and Type of Orthodontic Tooth Movement

Start date: February 24, 2019
Phase: N/A
Study type: Interventional

This study aims to assess the effect of PRP on the rate and type of OTM during en-masse frictionless retraction of maxillary anterior teeth using a segmental arch technique. Thirty adult patients exhibiting class II division 1 malocclusion requiring upper first premolar extractions followed by en-masse retraction will participate in the study. They will be randomly and equally distributed into the PRP group (G1) and the control group (G2). The injection of PRP will be performed pre-retraction. The rate of orthodontic tooth movement will be assessed clinically by measuring the extraction space with a digital caliper. The cephalometric radiographs will evaluate the type of OTM at the beginning of en-masse retraction (T0) and at the middle of en-masse retraction (T1).

NCT ID: NCT05928143 Completed - Clinical trials for Class II Division 1 Malocclusion

Patient Outcomes Associated With Two Accelerated Method of Retraction of Upper Front Teeth

Start date: February 15, 2018
Phase: N/A
Study type: Interventional

This study aimed to evaluate the levels of pain, discomfort, and functional impairment associated with traditional corticotomy and flapless corticotomy in the retraction of upper anterior teeth. 40 patients requiring extraction of maxillary first premolars and maximum anchorage to retract the upper anterior teeth will participate in the study. They will be divided randomly into two groups: flapless corticotomy (20 patients) and traditional corticotomy (20 patients).

NCT ID: NCT05542745 Completed - Clinical trials for Class II Division 1 Malocclusion

Measuring Rate of Anteriors Retraction With Two Different Techniques

Start date: February 20, 2020
Phase: N/A
Study type: Interventional

Few studies had investigated the effectiveness of segmental retraction. As a result of that, this study was concerned about comparing retraction rate of maxillary incisors between buccal and palatal mini-implant supported retraction groups in Class II division 1 non growing patients for 3 months interval.

NCT ID: NCT05465473 Recruiting - Clinical trials for Class II Division 1 Malocclusion

Effect of Low-level Laser Therapy During Maxillary Molar Distalization Using a Skeletally Anchored Appliance

Start date: December 12, 2021
Phase: N/A
Study type: Interventional

study will be directed to evaluate the effect of low-level laser therapy during maxillary molar distalization using a skeletally anchored appliance

NCT ID: NCT05335824 Completed - Clinical trials for Class II Division 1 Malocclusion

The Effect of Autologous Platelet Concentrations on Orthodontic Treatment Time

Start date: February 8, 2019
Phase: N/A
Study type: Interventional

60 patients needed therapeutic extraction of the maxillary first premolars with subsequent retraction of the maxillary canines were divided to randomly three groups: (1) PRP group: Received PRP injections, (2) I-PRF group: Received I-PRF injections, (3) Control group: conventional treatment with no injections. TPAs were used as an anchor unit. Coil springs were used to distalize the upper canines on 0.019 x 0.025-inch stainless archwires. Alginate impressions and dental casts of the maxillary arch were done at five-time points over a 4-month follow-up period. The amount of canine movement, canine rotation, and anchorage loss were measured on three-dimensional digital models superimposed on the rugae area.

NCT ID: NCT05171738 Active, not recruiting - Clinical trials for Class II Division 1 Malocclusion

Distalization Via Skeletally-anchored Distaljet Appliance With Two Approaches of Micro-osteoperforations

Start date: September 1, 2021
Phase: N/A
Study type: Interventional

study will be directed to evaluate two approaches of micro-osteoperforations during maxillary molar distalization.

NCT ID: NCT05040945 Completed - Clinical trials for Class II Division 1 Malocclusion

Evaluation of the Levels of Pain and Discomfort Associated With Two Techniques of Corticotomy

Start date: February 15, 2018
Phase: N/A
Study type: Interventional

This study aims to estimate the levels of pain and discomfort associated with the en-masse retraction of the six upper anterior teeth and assisted by either conventional or flapless corticotomy. Thirty-four adult patients exhibiting class П division 1 malocclusion will be randomly allocated to either the conventional corticotomy group or the flapless corticotomy group, and they will be treated by extraction of maxillary first premolars with applying mini-screws between maxillary second premolar and first molar as temporary skeletal anchorage devices (TSADs). The levels of pain and discomfort will be rated after 24 hours of corticotomy (T1), four days (T2), seven days (T3), 14 days (T4) and after 28 days of corticotomy, by asking the patients to fill in a questionnaire for assessing levels of pain and discomfort.

NCT ID: NCT04905004 Recruiting - Clinical trials for Class II Division 1 Malocclusion

Efficiency of Canine Retraction Using Different Reactivation Intervals

Start date: April 1, 2017
Phase: N/A
Study type: Interventional

Canine retraction after 1st premolar extracion into the extraction space is a routine treatment in orthodontics. Orthodontic patients requiring first premolar extraction, canine retraction and maximum anchorage were recruited for this randomized controlled trial. A search of the literature did not indicate the ideal frequency of elastomeric chain reactivation for optimum canine retraction. The study was approved by the ethical committee. The first premolars were extracted. Elastomeric chains were used to retract the canine distally into the 1st premolar space. The optimum reactivation interval was evaluated regarding the efficiency of treatment in terms of rate of canine retraction, canine tipping and rotation, root resorption and pain at the intervals of 2, 4, 6 and 8 weeks. Three dimensional imaging, as well as digital scanning were the methods for data collection.

NCT ID: NCT04847492 Completed - Clinical trials for Class II Division 1 Malocclusion

Evaluation of Upper Anterior Teeth Retraction Rate Assisted by Two Corticotomy Techniques

Start date: June 9, 2017
Phase: N/A
Study type: Interventional

This study aims to assess the dental changes, periodontal health and the pulp vitality in mini-screw supported en-masse retraction associated with traditional or flapless corticotomy techniques. 40 adult patients exhibiting class II division 1 malocclusion requiring upper first premolar extractions followed by en-masse retraction will participate in the study. They will be randomly and equally distributed into two groups: traditional corticotomy (20 patients) versus flapless corticotomy (20 patients). The corticotomy procedure will be performed pre-retraction. The dental changes will be assessed using dental casts. The impressions will be taken after finishing the leveling and alignment phase and before starting the en-masse retraction (T0), 1 month (T1), 2 months (T2), 3 months (T3), 4 months (T4), and 5 months (T5) following the onset of en-masse retraction. The final impression will be considered at the end of the en-masse retraction (when the canines reach Class Ι relationship).

NCT ID: NCT04814173 Completed - Malocclusion Clinical Trials

The Efficacy of Tow Mechanics for Total-maxillary-arch-distalization

Start date: May 20, 2022
Phase: N/A
Study type: Interventional

Patients with class II division 1 malocclusion who have increased overjet will be treated in this study. The efficacy of one-jaw and tow-jaw mechanics for mini-implants anchored total-maxillary-arch-distalization in the treatment of class II division 1 malocclusion will be assessed. The skeletal, dental and soft tissues changes resulted by these tow interventions will be studied. As well as, the pain levels, oral-health related quality of life during all stages of the treatment and the smile components will be explored and compared with the traditional treatment results of this type of malocclusion (en-mass retraction with first premolars extraction). There are three groups : 1. a group of patients in which participants will be undergo to the one-jaw mechanic for mini-implants anchored total-maxillary-arch-distalization (mini-implants in the maxillary arch). 2. a group of patients in which participants will be undergo to the tow-jaw mechanic for mini-implants anchored total-maxillary-arch-distalization (mini-implants in the mandibular arch with class II elastics). 3. a group of patients in which participants will be undergo to the en-mass retraction with first premolars extraction with mini-implants in the maxillary arch.