The particular health condition(s) or problem(s) being prevented. Electromyography Masticatory muscle activity Clear thermoplastic retainer Wrap-
Conditions
Interventions
All thermoform appliances are manufactured,
under standardized laboratory conditions and following the manufacturer’s instructions,
using a dental laboratory thermoforming machine (BIOSTAR®-
Scheu-
Dental GmbH,
Germany). The thermoplastic appliances are made from 0.75-
mm thick Essix ACE plastic foil (ACE,
Raintree Essix,
Glenroe). ,The wrap-
around retainers had the acrylate base placed orally,
and the labial archwire was made from round,
0.8-
mm diameter,
stainless steel wire (Dentaurum,
Ispringen,
Germany). The labial arches surrounded all erupted teeth including the second molars and formed a U-
shaped loop between the canines and ï¬rst premolars.
Experimental Device,Active Comparator Device
thermoplastic vacuum-
formed appliance group,wrap-
Sponsors
Department of Orthodontics, Faculty of Dentistry, Chulalongkorn University
Department of Physiology,
Faculty of Dentistry,
Chulalongkorn University
Eligibility
Sex/Gender
All
Age
14 Years to 40 Years
Inclusion criteria
Inclusion criteria: - All participants have a natural dentition with no missing teeth except for the third molars - All participants are dentate with a Class I occlusion, overjet and overbite less than 3 mm. - All participants had no edentulous area, no significant facial deformity or symptoms of cranio-mandibular disorders, and no temporomandibular symptoms based on the assessment protocol of Schiffman, et al.18 (2016) - The participants had previous orthodontic treatment by either extraction or non-extraction, and have to wear removable retainers for maintain the occlusion.
Exclusion criteria
Exclusion criteria: - Systemic diseases that may affect activities of the masticatory muscles. - Medications, such as muscle relaxants, that may affect muscle function
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| Muscle ability Pre-treatment (T0), immediate wearing the appliances (T1), after 3-month (T2) and after 6 month (T3) Surface electromyographic measurement,Masticatory performance Pre-treatment (T0), immediate wearing the appliances (T1), after 3-month (T2) and after 6 month (T3) Chewing efficiency measurement | — |
Secondary
| Measure | Time frame |
|---|---|
| Subjective evaluation of masticatory ability Pre-treatment (T0), immediate wearing the appliances (T1), after 3-month (T2) and after 6 month (T3) Food Intake Ability Index assessment,oral health-related quality of life After 6-month follow up visit oral health-related quality of life assessment | — |
Contacts
Public ContactRungtiwa Jirawiwatsaree
Faculty of Dentistry, Chulalongkorn University
Outcome results
None listed