A 51-year-old female patient reported to the department of Prosthodontics, with a chief complaint of looseness of both upper and lower dentures and desired the replacement of the same. Her history revealed that, she had been edentulous for 15 years and had been wearing dentures for 14 years.\nThe intra-oral examination revealed a narrow and constricted U-shaped flat palatal vault and severely resorbed maxillary and mandibular ridges []. The treatment plan decided for the patient was the fabrication of a hollow maxillary complete denture combined with neutral zone concept to enhance the retention and stability of dentures. Because of severely resorbed ridges and increased inter-ridge distance, fabrication of hollow maxillary complete denture with utilization of neutral zone concept was planned for better stability and retention.\nMaxillary and mandibular impression was made followed by border molding with green-stick (DPI Pinnacle tracing sticks, The Bombay Burmah Trading Corporation Ltd.,) and final impression with zinc oxide eugenol impression paste (DPI Impression paste, The Bombay Burmah Trading Corporation Ltd.,). Compound occlusal rims were fabricated by using modeling compound (DPI Pinnacle Impression Compound, The Bombay Burmah Trading Corporation Ltd.) mixed with greenstick (DPI Pinnacle Tracing sticks, The Bombay Burmah Trading Corporation Ltd.) in ratio of 3:7 i.e. 3 parts impression compound +7 parts greenstick compound) as per McCord's technique for making a neutral zone record by having the patient perform various Orofacial movements. Then index of this record was then made with plaster of Paris and rims were duplicated in wax. The maxilla-mandibular relationship was recorded using wax occlusal rims and transferred to the articulator and the artificial teeth were arranged. Try in procedure was done and then, all the wax excluding the wax surrounding the teeth was removed and replaced with light body elastomeric impression material (Aquasil Ultra LV Dentsply Caulk, Milford, USA). Trial denture bases were reinserted into the patient's mouth and she was instructed to perform various Orofacial movements so as to record the polished surface of the denture in harmony with the Orofacial musculature. After the try in procedure, wax up was done and dentures were made ready for processing. The mandibular denture was processed using the conventional procedures.\nThe Special Steps Taken for the Fabrication of Hollow Maxillary Complete Denture were as Follows:\nThe maxillary trial denture was flasked [] and dewaxed in the conventional manner []. Half of the heat cure PMMA (Trevalon, Dentsply India Pvt. Ltd., Gurgaon, India) in dough stage was positioned accurately over the dewaxed mould and then salt crystals were placed over it []. Above that, the remaining heat cure resin was packed and cured at 74 degree C for 7-8 hours []. Cured denture was retrieved [] and 2 holes were made in the thickest palatal area []. All the residual salt crystals were removed by flushing water with the high pressure syringe through the holes. After making sure that all the salt crystals have been removed, the escape holes were closed with autopolymerizing resin (Trevalon, Dentsply India Pvt. Ltd., Gurgaon, India) []. The hollow cavity seal was verified by immersing the denture in water, if no air bubbles are evident, an adequate seal is confirmed. The dentures were inserted in the patient's mouth [] and instructions regarding care, hygiene and maintainance were given. On 3-month follow up, the patient reported that she was quite comfortable with the dentures and she had encountered no problems.
A 91-year-old male patient, presented with the loss of the left eye [] after orbital exenteration due to squamous cell carcinoma of left upper eyelid. At the time of tumor resection, the orbit was lined with a split-thickness skin graft taken from the thigh. The patient did not receive pre- or post-operative radiation treatment.\nDuring the examination, the patient was concerned with his facial disfigurement and wanted an acceptable solution as early as possible. Various prosthetic treatment modalities ranging from acrylic resin orbital prosthesis to implant retained silicone prostheses were explained and discussed with the patient. Due to socioeconomic reasons, the patient chose orbital prosthesis made of acrylic resin. The fabrication of PMMA resin orbital prosthesis was planned, and it was decided to use available anatomic undercuts to retain the prosthesis.