Next, this prosthesis was removed and an additional bilateral posterior record was performed with regular polyether material (Impregum Soft) by means of occlusion rims and an acrylic resin template. During this step, the anterior acrylic record preserved the OVD. These records transferred the correct maxillomandibular relationship to the semiadjustable

articulator (Fig 7). After that, the copings of the maxillary anterior teeth were cast with cobalt-chromium alloy. The lingual surfaces of the maxillary right and left canines were flattened to guide the insertion/removal path of the RPD, while the flat lingual surfaces of the maxillary right and left lateral incisors were planned to serve as additional guide planes and to act as indirect retainers if the maxillary second molars are GDC 973 lost. Two-part (patrix-matrix) rigid extracoronal precision attachments (Artfix; Odontofix Ind. Com. de Material Odontológico Ltda. EPP, Ribeirão Preto, Brazil) with a vertical freedom of movement and an activation portion were cast on the distal surface of the maxillary right and left canines. The patrix portions were positioned

during the fabrication of the crown wax patterns using a dental surveyor. The casting procedures were executed normally to obtain a rigid connection between the FPD and the patrix portion. Additional care was taken during the finishing and sandblasting procedures of the casted FPD to avoid abrasive wear of the attachment. click here As the matrix portion need not be welded to the RPD framework, it was picked up from the patrix portion using acrylic resin. This procedure facilitates long-term repair and/or attachment activation or replacement. The metal copings were clinically examined and each segment was bonded (Fig

with acrylic resin (Duralay) to avoid welding distortion and marginal gap. After the welding procedures, a coping impression was MCE taken, and the remount cast was positioned on the semiadjustable articulator. For this purpose, the interim RPD was maintained in position determining the suitable OVD and a maxillomandibular acrylic record was made on the monoblock framework. Next, the interim RPD was removed and the OVD was recorded using occlusion rims and an acrylic resin template (Fig 9). An adequate interocclusal distance allowed ceramic application. The unglazed ceramic was clinically tried and returned to the definitive cast. The dental surveyor was again used to check the previously established insertion/removal path of the RPD (Fig 10). The FPD/cast assembly was duplicated with reversible hydrocolloid, and a refractory cast was produced. The RPD framework was cast in a cobalt-chromium alloy and clinically tried to check seating (Fig 11). The artificial teeth were selected and positioned using the interim prostheses as form and color reference.