Local Factors that Increase Plaque Pathogenicity Flashcards
define pathogenicity
the ability of the bacteria in a biofilm to produce the periodontal disease
which biofilm is more pathogenic: the one first developed on the tooth surface or the mature one?
the mature biofilm
plaque pathogenicity relates to the _____ of plaque rather than simply an increase in the amount of plaque
character
the ____ it colonizes, the greater the number of disease-causing bacteria in the area
longer
what are some causes of direct damage
- occlusal forces
- food impaction
- patient habits
- femitus
- faulty appliances
- faulty restorations
what happens to the gingival tissues from food impaction
gingival tissues are stripped from tooth surface
what patient habits can cause damage to teeth
- tongue thrusting
- mouth breathing
- improper use of toothpicks or other interdental aids
if a crown margin that is closer than 2 mm to the crest of the alveolar bone what can result?
resorption of the alveolar bone
define functional occlusal forces
normal forces produced during the act of chewing food
define parafunctional occlusal forces
result from tooth to tooth contact when not in the act of eating such as clenching
what patients normally deal with parafunctional occlusal forces
orthodontic patients
what are some signs of trauma from occlusion
- tooth mobility
- sensitivity to pressure
- migration of teeth
- alveolar bone resorption
what are the two types of trauma from occlusion
- primary
2. secondary
define primary occlusal trauma and examples
injury to a HEALTHY periodontium resulting from excessive occlusal forces
-high restorations
define secondary occlusal trauma and examples
injury to the periodontium from NORMAL occlusal forces applied to an UNHEALTHY damaged periodontium
-vertical bone loss
