Australasian Dentist Magazine Nov Dec 2021

Category 62 AustrAlAsiAn Dentist C M Y CM MY CY CMY K t his 49 year old female patient was referred to my practice in september of 2017. she had previously underwent a full mouth clearance with the placement of six dental implants in the maxillary arch and four dental implants in the mandibular arch. this procedure was completed in one treatment visit under general anaesthesia by another dentist. A fixed implant borne reconstruction was provided to her the same afternoon as her implant surgery. Her main concerns upon presentation were the unaesthetic appearance of her teeth, the continual fracture of her implant prostheses, the presence of loose acrylic from her implant prostheses and finally the presence of a foul odour from her mouth. Figures 1 and 2 illustrate the clinical situation upon the day of initial presentation. A number of different options for treatment were presented to the including the following: a. Fixed dental prosthesis b. removal dental prosthesis. the patient chose this option due to her unfavourable result with her fixed treatment. Figures 3 and 4 demonstrate the attention to detail for primary impressions for complete edentulous arches. the aim of primary impressions for conventional complete dental prostheses is to achieve an overextended impression of the area. Here, you will see stock trays are modified with periphery wax. Wax stops are also used to help centralise the arch within the tray. the consistency of alginate is of utmost importance in this record. For primary impressions, a putty-like consistency is recommended to allow an overextension of the peripheries. By altering the powder to water ratio, one can attain a sausage-like consistency of the alginate. it should be thick enough to be able to roll the alginate into a sausage. Anatomical landmarks to be captured for the maxillary arch are the post dam and hamular notches, whilst the mandibular arch impression should impress the submandibular fossa and retromolar pads. Fixture level impressions are taken with open tray impression copings. these copings are splinted with GC Pattern resin in the laboratory and then sectioned Removable Prosthodontics: Where Art Meets Science liniCal By Dr Tuan Dao BDs (Hons), MDsc (Pros), FPFA Prosthodontist and specialist Clinical educator Figure 3 Figure 1 Figure 4 Figure 2 Figure 7 Figure 8 Figure 5 Figure 6 Figure 9 Figure 10