Implants Flashcards
(25 cards)
What qualifies a patient for implants on the NHS
Oral Cancer
Trauma
Hypodontia
What is a contraindication to implant placement
Bisphosphonates (IV) Smoking Radiotherapy Bisphosphonates (oral) Diabetics Corticosteroids/immunosuppressives Chemo (only active) Osteoporosis
What provides the best lip support?
A denture this provides more lip support than an implant
What periodontal considerations need to be made when thinking about implants
Periodontal disease status past previous and active
Perio patients have a 5% reduction in success (normal is about 90-95%)
What dental factors need to be considered when thinking about implants
Number and location Space and bone (minimum 6.5mm) Caries Restoration Crown height Parafunction Ortho
What radio graphic considerations need to be made when considering implants
Dentition Unerupted teeth Retained roots Anatomical structures Pathology Bone volume Root morphology Are teeth preserving bone or loosing it (PA Path)
What is the important aspects of treatment planning for implants
Prosthesis driven implant treatment: Study model analysis Diagnostic wax up Radio graphic/stent made Cross sections and measurements
What does smoking do to the risk of failure of dental implants
Doubles the risk of failure
What are the four types of bone quality
Type IV (4) - very thin cortical bone with low density trabecular bone of poor strength Type III (3) - thin cortical bone with dense trabecular bone of good strength Type II (2) - thick cortical bone with marrow cavity Type I (1) - homoaeneous cortical bone (marble like not vascular)
What is the best bone type for implants
Type 2 or 3
What is guided bone regeneration (GBR)
This is where a bone graft is placed to ensure there is enough supporting bone for a dental implant placement
What information do you need to know about implants when you are faffing with them
Name/make
Implant diameter/width
Connection type
What is the difference between a cover screw and healing abutment
Cover screw - this is going to be sutured under the gingival tissue
Healing abutment - this is also a cover screw but remains above the gingivae when sutured in
What are abutments in implantology
Abutments connect the tooth/crown to the implant
What is a closed tray technique
This is where impression coping is placed light body silicone and then impression tray placed to take impression, impression removed, impression coping removed room implant and placed in impression
What is the closed tray technique
Special tray made impression copings stick through, silicone impression take and coping’s unscrewed and removed with impression at the same time
What are the implant survival statistics at 5 and 10 years
95%
93%
What is the criteria for implant success
Firm
No radioluceny around implant
Vertical bone loss of 0.2mm after the first year
Lack of symptoms
How do you asses an implant health
Crown down
Start with crown and abutment then the soft spot issues and then the hard tissues
What happens in chipped or broken implant prostheses
Composite or replace
What are biological complications
Peri-implant mucositis - reversible inflammatory reaction of soft tissues plaque induced
Peri-implantitis inflammatory reaction in the tissues surrounding implant and loss of supporting bone also plaque induced
How would you exam for peri implant disease
Palpating to check for suppuration and is it mobile?
How much force is used when probing around implants?
15g less than normal because no transverse fibres attaching to implant
How is peri-implant disease treated
Non surgical debridment (preferably with non metal instruments)
Modify the prosthesis
Chemotherapeutic agents
