Luxation Injuries
1.Terminology, frequency and etiology:
Five different types of luxation injuries:
1.Concussion: An injury to tooth-supporting structures without abnormal
loosening or displacement but with marked reaction to percussion.
2. Subluxation (loosening): An injury to the tooth-supprting structures with
abnormal loosening but without clinically or radiographically demonstrable
displacement of the tooth..
3 .Extrusive luxation (peripheral displacement, partial avulsion): Partial
displacement of the tooth out of its socket. Radiographic examination always
reveals increased with of the periodontal ligament space.
4. Lateral luxation: Eccentric displacement of the tooth. This is
accompanied by comminution or fracture of the alveolar socket. Depending
of the angulation of the central beam, radiographic examination may or may
not demonstrate increased with of the periodontal ligament space.
5. Intrusive luxation (central dislocation): Displacement of the tooth deeper
into the alveolar bone. This injury is accompanied by comminution or
fracture of the alveolar socket.
Luxation injuries comprise 15 to 61% of dental traumas to permanent teeth,
while frequencies of 62 to 73% have been reported for the primary dentition.
Predominant etiologic factors in the permanent dentition are bicycle injuries,
falls, fights and sports injuries.
In the primary dentition falls dominate.
1.Terminology, frequency and etiology:
Five different types of luxation injuries:
1.Concussion: An injury to tooth-supporting structures without abnormal
loosening or displacement but with marked reaction to percussion.
2. Subluxation (loosening): An injury to the tooth-supprting structures with
abnormal loosening but without clinically or radiographically demonstrable
displacement of the tooth..
3 .Extrusive luxation (peripheral displacement, partial avulsion): Partial
displacement of the tooth out of its socket. Radiographic examination always
reveals increased with of the periodontal ligament space.
4. Lateral luxation: Eccentric displacement of the tooth. This is
accompanied by comminution or fracture of the alveolar socket. Depending
of the angulation of the central beam, radiographic examination may or may
not demonstrate increased with of the periodontal ligament space.
5. Intrusive luxation (central dislocation): Displacement of the tooth deeper
into the alveolar bone. This injury is accompanied by comminution or
fracture of the alveolar socket.
Luxation injuries comprise 15 to 61% of dental traumas to permanent teeth,
while frequencies of 62 to 73% have been reported for the primary dentition.
Predominant etiologic factors in the permanent dentition are bicycle injuries,
falls, fights and sports injuries.
In the primary dentition falls dominate.
