Infraocclusion Flashcards
Why use infra occluded and not submerged?
Intra-occluded more accurate - position of tooth is due to failure to eruption rather than movement away from occlusal plane
How to examine infra-occluded tooth?
No and position of infra occluded teeth
Mobility of teeth
Assess occlusion
Adjacent teeth - inc tipping/ OE
How to classify level of infra occlusion?
Mild, moderate or severe
What is mild infraocclusion
Tooth below occlusal plane but not below contact pointW
What is moderate infra occlusion?
Tooth is at level of adjacent contact points
What is severe infra occlusion?
Tooth is below level of adjacent contact points
What are clinical findings associated with infra occluded mokars/
Tipping of adjacent teeth into space
Lateral overbite
Overeruption of adjacent teeth
Apically positioned gingival margin
High pitch sound percussion
Deviation of centre line
What is aetiology of infra occlusion?
Commonly believed to be due to ankylosis - failure of PDL to separate from cementum and dentine from bone
What other anomalies are associated w/ infra occluded teeth?
Peg shaped laterals
Enamel hypoplasia
Ectopic eruption first molars
Hypodontia
What is most common associated feature of infraoccluion?
Missing/ hypodontia premolar
65%
How to monitor infra occluded molars?
Monitor w/ exams and photographs
What fractures would see on rad?
Obliteration of periodontal ligament space
Different occlusal height
Oblique inter proximal bone levels
What are tx options - permanent successor present?
Conservative mx
XLA infra occluded tooth - may involve surgical intervention (consider use space maintainer)
What are tx options if no successor?
Depends on severity
Mild - mod - retained and restored to function (SCC/ composite)
severe - XLA to avoid vertical bone defect (do this as part ortho plan)
