General Restorative Dentistry Flashcards
What are the three broad ways in which teeth can be replaced?
Dentures
Bridgework
Implants
What is meant by the term shortened dental arch?
A dentition where most posterior teeth are missing, but there is satisfactory oral function without the use of prosthesis.
Do shortened dental arches result in a higher incidence of TMD?
There is no evidence to support SDA being a risk factor to TMD problems.
Do shortened dental arches suffer from a higher rate of occlusal wear than full arches?
No, the rate of attrition is not significantly different.
Do shortened dental arches suffer from an increased rate of alveolar bone loss?
No, the rate of alveolar bone height loss is the same as in regular dental arches.
What are the indications for a shortened dental arch?
Missing posterior teeth
Sufficient occlusal contacts from premolars
Favourable prognosis for remaining teeth
Patient no motivated to pursue restorative treatment plan
Finanical barriers to restorative care.
The patient has a significant malocclusion
What should you consider before sugguesting a shortened dental arch?
Contra-indications
Appearance concerns
Discomfort from missing teeth
Existing occlusal instability
What is meant by the term occlusal stability?
The stability of tooth positioning relative to its spacial relationship in occluding dental arches.
What are the five requirements for occlusal stability?
Stable contacts in centric relation
Some form of anterior guidance
Disclusion of posterior teeth during protrusion
Disclusion of posterior teeth on non-working side during lateral movement
Disclusion of posterior teeth on working side during lateral movement.
What are some manifestations of a traumatic occlusion?
Fracture of restorations/teeth
Tooth mobility
Dental pain not from infection
Toothwear
Which three types of patient is a shortened dental arch most likely to fail in?
Periodontal disease patients
Occlusal instability patients
Toothwear patients
What records are required for mounting casts on an articulator?
- Facebow (relationship of max. and TMJ)
- Wax wafer bite (centric relation record)
- Bite reg (wax or silicone)
- Upper/lower impressions (no shit)
What is the average value of the sagittal condylar guidance angle used on an articulator?
Typically 30 degrees.
What treatment options are there for an enamel-dentine fracture?
- Bond fragment back to tooth, if within an hour and fragment kept hydrated.
- Direct restoration +/- pulp cap.
- Endodontic treatment if complicated treatment.
- XLA if tooth trauma is significant, or if there is severe mobility.
What are three reasons for overhangs when prepping an interproximal box?
- Poor matrix band adaptation
- Excessive force when packing
- Poor box design
How can you fix an overhang in a restoration?
- Re-treat tooth
- Use finishing strips to file down overhang.
How long does alginate take to set?
Anywhere between 1-4 minutes From the start of mixing depending on brand. Consistency of the mix as well as temperature/humidity will also impact this.
What steps can you take to prevent a HAI?
- PPE
- Handwashing
- Following the 9 SCIPS
What does SCIPS stand for with regards to healthcare?
A process for communicating information in an emergency.
Situation (Clincal status, MH, context)
Complications (Challenges to the situation)
Implications (Implications for patient health)
Proposal (Propose one or more courses of action)
Solution (Selecting the most appropriate proposal)
What is xerostomia?
A dry mouth.
What problems are made worse by xerostomia?
- Caries
- Dental erosion
- Periodontal disease
- Infections
What causes other than polypharmacy can trigger xerostomia?
- Aging
- Dehydration
- Radiation therapy
- Sjogren’s Syndrome
- Diabetes
- Nerve Damage
- Smoking/tobacco use
- Mouth breathing
What are the main types of provisional crown?
- Charside created crown (protemp)
- Preformed crown
What are some of the drawbacks of using preformed crowns?
- Too much variety in size/shape
- Won’t be bespoke to fitting surface
- Requires crimping
- Requires large stock of crowns
What can cause root resoption?
- Trauma
- Ortho
- Root replantation
- Genetics
- Inflamation
- Impacted teeth
- Dental treatment (endo/XLA)
How can you lower the risk of root resoption?
- Good OH
- Wear a mouthgauard during sports
- Avoid smoking/tobacco
- Regular dental attendance
- Treatment of dental disease
What can cause facial palsy?
- Viral infections
- Bacterial infections
- Head trauma
- Tumours
- Autoimmune disorders
- Pregnancy
- Genetic predisposition
What is the first line treatment for facial palsy?
- Eye-patch, as blinking reflex impaired
- Corticosteroids
- Anti-viral/anti-bacterials
- Physical therapy
How would you differentiate between Bell’s palsy and a stroke?
Bell’s palsy would only affect one side of the face, a stroke would affect the same side of the arm/neck/body.
Bell’s would also have general sensation, but stroke might cause numbness/tingling.
When should you intervene when a tooth is mobile?
If it poses a risk of aspiration/asphyxiation, if it is painful for the patient, or if it is posing mechanical problems for the patient.
What are the reasons for treating tooth loss?
Aesthetics
Function
Speach
Dental health
