36 Questions
Which of the following best describes the aim of the lecture?
To discuss the surgical procedures required prior to definitive prosthodontic treatment
What is the primary objective of preprosthetic surgery?
To modify the oral anatomy to facilitate the placement of prosthetic appliances
What contributes to accelerated ridge resorption in the mandible?
Denture wearing
When do bony changes in the jaws begin to take place after the loss of natural teeth?
Immediately
Why is ridge resorption more prominent in the mandible?
Due to less favorable occlusal force distribution
What are the ideal characteristics of alveolar ridge for best denture support?
Proper supporting structures for subsequent placement of prosthetic appliances
What is included in the preprosthetic surgery?
Surgical procedures to modify oral anatomy and enable successful implant placement
What is the impact of NO forces on teeth and periodontal ligament in an area after tooth loss?
Accelerated bone resorption
What contributes to ridge resorption being more prominent in the mandible than in the maxilla?
Lower surface area and less favorable occlusal force distribution
What are some factors that can accelerate ridge resorption?
Denture wearing, systemic, and local factors
What will be discussed later in relation to procedures required to enable successful implant placement?
Procedures required to enable successful implant placement
What are included in the objectives of this lecture?
Understanding surgical techniques of preprosthetic surgery and having awareness of oral and dental aspects of diabetes mellitus
What is the classification of resorption of maxillary alveolar ridge?
Class IV—knife-edge form with adequate height but inadequate width of alveolar process
What is the purpose of ridge augmentation?
To improve the height and width of a deficient alveolar ridge
Which procedure is used for removing large tori to enable successful denture placement?
Tori removal
What is the purpose of intraseptal alveoloplasty?
To recontour the alveolar ridge after tooth extraction
Which type of resorption of maxillary alveolar ridge is described as 'flat-ridge form with loss of alveolar process'?
Class V
What is the purpose of exostosis removal?
To remove bony exostoses
In denture construction, what may occur if irregularities of the alveolar bone are not recontoured before construction?
Painful pressure spots and instability
What is the purpose of nerve repositioning in denture construction?
Mental foramen protection and added strength where mandibular fracture may occur
What is the purpose of soft tissue adjustments in denture construction?
Repairing congenital or denture-induced soft tissue abnormalities
What procedure may be needed for orthodontic or preprosthetic purposes related to the labial frenum?
Frenectomy
What may lead to speech difficulties due to its attachment to the floor of the mouth or alveolar mucosa?
Lingual frenum
What is the purpose of Z-plasty procedures in reducing the amount of vestibular ablation after linear excision of a frenum?
To reduce tissue redundancy in the vestibule after excision of the frenum
Which surgical procedure is used to treat inadequate alveolar ridge height by deepening the sulcus?
Submucosal Vestibuloplasty
What is the major problem associated with techniques used for treating inadequate alveolar ridge height?
Wound contracture
What does the Vestibuloplasty with tissue Grafting technique involve?
Using mucosa pedicled from the upper lip and sutured at the depth of the maxillary vestibule
What is the aim of the lecture described in the text?
To discuss surgical procedures required prior to definitive prosthodontic treatment
What is the purpose of preparing an ideal ridge for successful denture construction?
To achieve retentive and stable denture placement
Which book would provide relevant sections for further reading on this topic?
Textbook of General and Oral Surgery, Churchill Livingstone 2003 pp 243-249
What technique involves removal of bony undercuts, sharp bony edges, and overgrowths?
(Removal of bony undercuts / sharp bony edges / overgrowths)
What is a common modification of the Transpositional Flap Vestibuloplasty technique?
(Suturing labial mucosa at a desired depth)
(True/False) Removal of flabby soft tissue, hypertrophic tissue, and deepening of the vestibule are not common procedures.
False
What does the preparation of an ideal ridge aim to achieve in denture construction?
Increase in height and width of the alveolar ridge
Which surgical procedure involves removal of bony undercuts, sharp bony edges, or overgrowths?
Removal of bony undercuts / sharp bony edges / overgrowths
What technique involves a submucosal tunnel and removal of submucosal tissue to reduce tissue attachments?
Submucosal Vestibuloplasty
Study Notes
Preprosthetic Surgery and Ridge Resorption
- The primary objective of preprosthetic surgery is to prepare an ideal alveolar ridge for successful denture construction.
- Ridge resorption is more prominent in the mandible due to the thin cortical layer and the direction of the NO forces on teeth and periodontal ligament.
- Accelerated ridge resorption in the mandible can be contributed by factors such as the direction of NO forces, parafunction, and periodontal disease.
- Bony changes in the jaws begin to take place after the loss of natural teeth, with the mandible undergoing more resorption than the maxilla.
- The ideal characteristics of an alveolar ridge for best denture support include being flat, wide, and with a smooth surface.
Preprosthetic Surgery Procedures
- Preprosthetic surgery includes procedures such as alveoloplasty, exostosis removal, and nerve repositioning.
- Alveoloplasty is used to remove bony undercuts, sharp bony edges, and overgrowths.
- Exostosis removal is used to remove excess bone and improve the contours of the alveolar ridge.
- Nerve repositioning is used to reposition the nerve to enable successful denture placement.
Ridge Resorption Classification
- Resorption of the maxillary alveolar ridge can be classified into three types: flat-ridge form with loss of alveolar process, knife-edge form, and high and narrow form.
Ridge Augmentation and Vestibuloplasty
- Ridge augmentation is used to enhance the dimensions of the alveolar ridge.
- Vestibuloplasty is used to treat inadequate alveolar ridge height by deepening the sulcus.
- The Vestibuloplasty with tissue Grafting technique involves deepening the sulcus and adding tissue to enhance the ridge dimensions.
Other Procedures
- Intraseptal alveoloplasty is used to remove interseptal bone and improve the contours of the alveolar ridge.
- Tori removal is used to remove large tori to enable successful denture placement.
- Z-plasty procedures are used to reduce the amount of vestibular ablation after linear excision of a frenum.
- Frenum removal may be needed for orthodontic or preprosthetic purposes.
Importance of Preprosthetic Surgery
- Preprosthetic surgery is crucial for successful denture construction, as it enables the creation of an ideal ridge for denture support.
- Irregularities of the alveolar bone can lead to difficulties in denture construction if not recontoured before construction.
- Soft tissue adjustments are necessary to ensure a comfortable and functional denture.
- Nerve repositioning is necessary to prevent nerve damage and ensure successful denture placement.
This lecture provides an overview of the surgical procedures necessary before definitive prosthodontic treatment. It covers the rationale and surgical techniques of preprosthetic surgery of oral tissues and the oral and dental aspects of diabetes mellitus.
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