JCO/FEBRUARY 2004 H retainers with Adams clasps or labial wires crossing the occlusion can create interferences that may lead to bruxism or disc displacement1-3 (Fig. 1). On the other hand, if a wraparound retainer is fabricated without crossover clasps, it is difficult to adapt the round wire closely enough to the anterior dentition to provide adequate mechanical retention, especially in patie...

The aim of the study is to evaluate the long term results of ribbond retainer after orthodontic treatment. One hundred and thirty patients who were orthodontically treated satisfied the inclusion criteria of having received a semipermanent retention were treated with FRC lingual retainers (Ribbond (®)). It was performed a follow up evaluation after 2 years average from the retainer application ...

This clinical report describes a treatment for the replacement of a missing mandibular anterior tooth using a cantilever single-retainer resin-bonded fixed partial denture (RBFPD), fabricated from zirconium dioxide (ZrO2) ceramic. No clinical complications were observed at the 2-year 6-month follow-up examination after placement of the ZrO2 ceramic RBFPD, and satisfactory functional and estheti...

Aim The aim of this study was to assess the effectiveness of the 3-3 mandibular lingual stainless steel retainer to prevent a relapse of orthodontic treatment during the 12-year time span of the survey. Materials and methods Fifty patients with canine-to-canine bonded retainers (placed at least 10 years earlier) were recalled. All patients had been followed up annually during this period. Pat...

objectives : this finite element method study aimed to compare the amount of stress on an isolated mandibular second premolar in two conventional reciprocal parallel interface designs of removable partial dentures (rpds) and the same rpd abutment tooth (not isolated). materials and methods: a kennedy class 1, modification 1 rpd framework was simulated on a 3d model of mandible with three differ...

labial bows require periodic tightening to maintain their activation. Without these adjustments, the activation loops at each end of the labial bow gradually open, reducing the force delivered by the appliance and often causing a relapse of anterior crowding. Since such relapse occurs gradually, the patient may be unaware of it until it has advanced to the degree that retreatment with fixed app...