Canine Occlusal Relationship Changes After Full Mouth Rehabilitation Under General Anesthesia
Condition: General Anesthesia
Study type: Interventional

Summary: 
      The aim of the study is to assess and compare canine occlusal relation in children with
      carious primary molars before they are treated by stainless steel crowns under general
      anesthesia and after their placement ,to evaluate the possibility and the time required for
      the post operative canine relation to resolve and how the treatment affects frequency and
      type of food intake.
    

Detailed description: 
      1. Children who require immediate full mouth rehabilitation under general anaesthesia will
           be recruited from the General Anesthesia (GA) unit in the Department of Pediatric
           Dentistry, Faculty of Oral and Dental Medicine, Cairo University.

        2. Two postgraduate students will be filling the patient's assessment chart as shown in
           appendices prior to treatment. They will measure the canine occlusal relation. The
           measurements will be made in the maximum intercuspation position (MIP) in the centric
           occlusion (CO) guided by the operators' hand.

        3. Before general anesthesia, an anesthesiologist and an internal medicine specialist will
           examine participating children, and the necessary preclinical tests will be requested.

        4. On the day of the procedure, parents of the participants will fill a questionnaire
           asking for previous dental treatments of the child and his/her medical history and
           acceptance to join the study (written consent).

        5. The canine occlusal relationship of both upper and lower primary canines shall be
           determined by measuring the vertical dimension from the gingival zenith of the upper
           canine and the gingival zenith of the lower canine at the right and left sides.

        6. The distance shall be determined using a digital caliper (Shenzhen Jiabaili Electronic
           Commerce Co., Ltd), and the reading will be photographed by a digital camera (iPhone 11
           dual 12 MP Ultra-Wide and wide camera, Apple Inc.).

        7. For further accuracy, this will be repeated twice, and in case of the presence of a
           difference, the measurement will be repeated for the third time, and the mean of the
           values will be calculated.

        8. The treatment will be performed under general anesthesia, tooth preparation will be
           done, and the eight Stainless-steel Crowns (3M™ ESPE™ Stainless Steel Primary Molar
           Crowns) will be seated.

        9. The measured values will be recorded preoperatively and immediately after the treatment
           while the patient is unconscious.

       10. Pre-operative determination of the canine occlusal relation of the upper and lower
           primary canines will be done; after placement during the operation and after 1, 2 and 6
           months follow up period.
    

Intervention name(s): Digital caliper (Shenzhen Jiabaili Electronic Commerce Co., Ltd)
Intervention type(s): Device
Intervention description(s): Measuring the vertical distance between the gingival zenith of the upper canine to the gingival zenith of the lower canine
Allocation: Non-Randomized
Intervention model: Parallel Assignment
Masking: None (Open Label)
Primary purpose: Screening
Keywords: Full mouth rehabilitation; Canine Overlap relation; vertical dimension of occlusion; canine occlusal relation