Preprosthetic Surgery

Question 1

Best denture support has

Answer 1

• No evidence of pathology
• Proper interarch relationship
• Large alveolar process
• No protuberances or undercuts
• Adequate palatal vault form
• Proper size and shape of tuberosities
• Adequate keratinized tissue
• Adequate vestibular depth

Question 2

Alveoplasty

Answer 2

• Bony areas requiringreconturing should be exposed using an envelope type of flap
• A mucoperiosteal incision along the crest of the ridge, with adequate extension anterioposterior to the area to be exposed, and flap reflection allow adequate visualization and access to the alveolar ridge
• Where adequate exposure is not possible, small vertical-releasing incisions may be necessary

Question 3

Intraseptal Alveoloplasty

Answer 3

• An alternative alveoplasty technique is the use of an intraseptal alveoplasty or Deans technique
• Involving the removal of intraseptal bone and the repositioning of the labial cortical bone, rather than removal of excessive or irregular areas of the labial cortex

Question 4

Tuberosity Reduction - Bony

Answer 4

• Recontouring of the max tuberosity area may be necessary to remove bony ridge irregularities or to create adequate interarch space, which allows proper construction or prosthetic appliances in the posterior areas

Question 5

Tuberosity Reduction - Soft

Answer 5

• Provide adequate interarch space for proper denture construction in the posterior area and a firm mucosal base of consistent thickness over the alveolar ridge denture-bearing area

Question 6

Buccal Exostosis- Undercuts

Answer 6

• Excessive bony protuberances and resulting undercut areas are more common in max
• A crestal incision extends 1 to 1.5cm beyond each end of the area requiring contour, and a full-thickness mucoperiosteal (FTMP) flap is reflected to expose areas of bony exostosis
• Vertical-releasing incisions may be necessary to provide access and prevent trauma to st flap
• Small areas can be recontoured with a file, larger areas may need a rongeur or rotary instrument

Question 7

ST Abnormalities 4

Answer 7

• Excessive fibrous or hypermobile tissue
• Inflammatory lesions such as
  
  • Inflammatory fibrous hyperplasia of the vestibule
  • Inflammatory papillary hyperplasia of the palate
  • Abnormal muscular and frenal attachments

Question 8

Labial Frenectomy techniques 3

Answer 8

• The simple excision technique (narrow frenum)
• Z-plasty (narrow frnum)
• Localized vestibuloplasty with secondary epithelialization (wide frenum)