W10 NCTL + hypersensitivity Flashcards
What is tooth wear?
From causes other than dental caries
What is attrition?
The physiological wearing away of tooth structure as a result of tooth-to-tooth contact,
Clinical sings: common on incisal/occlusal contacting surfaces; small polished facet.
Aetiological factors: Clenching, grinding, bruxism, TMD
What is erosion?
Loss of tooth structure by a chemical process.
It looks like bilateral concave defects, looks ‘cupped’.
Increased prevalence in bullimia.
What is abrasion?
The physical wear of tooth surface through an abnormal mechanical process, independent of occlusion. Usually from a foreign object or substance repeatedly with tooth
What is abfraction?
Loss of HT from eccentric occlusion loads leading to compressive ad tensile stresses at the cervical fulcrum area f the tooth. “wedge shaped defect”
How would you assessment in the EO NCTL grinding?
EO muscle palpaltation of TMD & MOM; may be hypertrophic
Tenderness, clicking, crepatis, aches and pain
What would you need to note in the IO assessment for clenching?
Extent (localised/generalised) and location of tooth wear. Severity? Normal or pathologial?
What are special tests for NCTL and risk factors that may be present?
Radiographs,
study casts, intra-oral pics, salivary analysis, diet analysis
What are treatment planning considerations?
Treat acute conditions, prevention, referral for further management and stabilization
What is dentinal hypersensitivity?
Pain due to exposed dentine: usually from external stimulus eg, thermal, chemical, osmotic. Short and sharp
Does dentine exposure always lead to hypersensitivity?
No
What are the most common mechanisim of dentinal hypersensitivity?
Hydrodynamic theory/
Fluid movement : stimuli affects fluid in dentinal tubules, → neural discharge via baroreceptors.
Examples:
Thermal Stimuli: Cold air
Chemical: sugar acid, and salt result in fluid flow outward
Mechanical stimuli: toothbrush bristles or fingernail
What are associated factors with dentinal hypersensitivity?
Gingival recession Periodontal disease NCTL Bleaching Excessive OH behaviors
What are dentinal sensitivity considerations?
May inhibits pts ability to eat/drink
Affect OH planning
Effect on tx planning
Potential differential diagnosis for pain related concerns
What is the treatment for dentinal hypersensitivity?
First line of tc to prevent and address predisposing factors and education.
Second line: desensitising toothpastes
