OPR Progressive Silicone Appliances

Structure: Buccal shields, lip bumpers, guiding grooves, a tongue guide and upper and lower labial ridges combine perioral-functional and dental-guidance features.

Sizes: Small: reference age 3–6; medium: 6–9; large: 9–12; extra-large: larger dental arches.

Use and review: For clinician-assessed functional or dentoalveolar anterior crossbite and selected mild Class III presentations. Marked skeletal mandibular prognathism, severe skeletal Class III, or inability to retrude the mandible to an edge-to-edge position requires further specialist assessment.

Structure: Upper and lower positioning features, a tongue guide and small bilateral tongue supports provide mandibular guidance and tongue-position cues.

Sizes: JVD-S: reference age 3–5; JVD-M: 6–9; JVD-L: 9–12.

Use and review: Selection for increased overjet and mandibular-retrusion Class II presentations depends on arch size, dental development and clinical examination. Follow the prescribed wear plan and review schedule.

Structure: The anterior region has no separate individual tooth sockets. A thickened support area provides bite support, while the posterior region allows room for adjustment and guidance.

Sizes: JVE-M and JVE-L. Select by arch dimensions, dentition stage and clinical assessment.

Use and review: For clinician-confirmed growing low-angle cases in which bite opening is appropriate. Mandibular-guidance objectives differ between increased-overjet and anterior-crossbite cases and must be planned separately.

Structure: Posterior guiding grooves and upper and lower posterior lingual ridges guide seating and occlusal contact, with attention to the bite path and dental midlines.

Sizes: JW-M: reference age 6–9; JW-L: 9–12.

Use and review: Distinguish dental, functional and skeletal factors before selection. Reviews should assess molar relationships, bilateral contacts and dental midlines.

Structure: Dental positioning is combined with tongue-position and perioral-functional guidance when anterior crossbite and open bite coexist.

Sizes: JCA-M: reference age 6–9; JCA-L: 9–12.

Use and review: Assess dental and functional factors, persistent sucking and abnormal resting tongue position. Marked skeletal discrepancies require further assessment of combined treatment needs.

Structure: An opening extends across the anterior canine-to-canine region. Elastic openings on the posterior occlusal surfaces and the flexible body provide support and guidance.

Sizes: JP-S: reference age 6–8; JP-M: 8–10; JP-L: 10–12.

Use and review: Assess the open-bite objectives, anterior and posterior vertical guidance, habit management and any combined treatment. Mandibular-guidance direction must be considered separately for protrusive and crossbite presentations.

Structure: Guiding grooves and positioning features support tooth seating and eruption guidance during the transition to permanent teeth.

Sizes: TK-M: reference age 6–8; TK-L: 8–10.

Use and review: Select using the actual eruption sequence, arch size and permanent-tooth development. Retained teeth, substantial space shortage, ectopic eruption or impaction require a diagnosis and appropriate management plan.

Structure: Posterior buccal shields accompany arch guidance in selected narrow arches with relatively upright posterior teeth. The design considers width and axial inclination together.

Sizes: TXD-M: reference age 8–10; TXD-L: 10–12.

Use and review: Assess the nature of the transverse discrepancy and suitable expansion approach. Review arch width, posterior inclination, shield fit, contacts and gingival condition.

Structure: A design without posterior buccal shields uses arch-form guidance and elastic contact for selected lingually inclined posterior teeth.

Sizes: TX-M: reference age 8–10; TX-L: 10–12.

Use and review: For cases assessed as suitable for posterior uprighting and dentoalveolar expansion. Review width, inclination, contacts and periodontal response.

Structure: An arched shield and anterior traction feature form a flexible device for clinician-guided lip-resistance exercises.

Sizes: The clinician selects the size by dentition stage, vestibular dimensions and fit.

Use and review: Habitual open-mouth posture or mouth breathing requires assessment of nasal patency and airway concerns first; do not force closed-lip wear. Remove the device and contact the clinician if pain, mucosal injury or breathing discomfort occurs.

Structure: A U-shaped lower-arch positioning area and lingual supports provide rounded, flexible surfaces for active tongue-elevation and position-awareness exercises.

Sizes: Select and trial-fit under professional guidance, checking intraoral fit and soft-tissue contact.

Use and review: May support tongue-position and swallowing-related exercises following professional assessment. Avoid forceful clenching or chewing. Remove and report significant pain, mucosal injury or breathing discomfort.