Jaw relation is defined as any relationship between the mandible and maxilla. There are three types of jaw relations: orientation, vertical, and horizontal. Horizontal jaw relation refers to the relationship between the mandible and maxilla in the anteroposterior direction. There are two types of horizontal jaw relation: centric and eccentric. Centric jaw relation is when the condyles articulate with the thinnest avascular portion of the discs against the articular eminences independently of tooth contact in the anterior-superior position.

1. JAW RELATION
 Jaw relation is defined as ‘Any relation of the mandible to the maxilla’- GPT.
 Three types-
Orientation jaw relation
Vertical jaw relation
Horizontal jaw relation

HORIZONTAL JAW RELATION
 It is the relationship of the mandible to maxilla in a horizontal plane.
 Also be described as the relationship of the mandible to the maxilla in the
anteroposterior direction.
 Two types-
1.Centric
2. Eccentric
CENTRIC JAW RELATION
1. ‘The maxillomandibular relationship in which the condyles articulate with
the thinnest avascular portion of their respective discs with the complex in
the anterior-superior position against the slopes of the articular
eminences.GPT-5
 This position is independent of tooth contact.

2. JAW RELATION
 Jaw relation is defined as ‘Any relation of the mandible to the maxilla’- GPT.
 Three types-
Orientation jaw relation
Vertical jaw relation
Horizontal jaw relation

 This position is clinically discernible when the mandible is directed
superior and anteriorly.
2. ‘’The most retruded physiologic relation of the mandible to and from which
the maxilla to and from which the individual can make lateral movement. It
is a condition that can exist at various degrees of jaw separation. It occurs
around the terminal hinge axis.’’ GPT-3
3. ‘’The most retruded relation of the mandible to the maxilla when the
condyles are in the most posterior unstrained position in the glenoid fossa
from which lateral movements can be made, at any given degree of jaw
separation’’ GPT-1.
4. ‘’The most posterior relation of the lower to the upper jaw from which
lateral movement can be made at a given vertical dimension’’[Boucher].