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CENTRIC RELATION : A KEY TO SUCCESS
One of the objectives of prosthodontic treatment is to restore missing dentition and oral structure, and for every restoration centric relation is an important consideration.
Centric relation (CR) is a bone-to-bone relation in which the head of the condyle articulates with the glenoid fossa of temporal bone.
The importance of centric relation in complete denture prosthodontics has been well known for many years. Some dentist claim that a correct centric relation is the single most important measurement made in the construction of complete dentures. Unfortunately, however common agreement has been reached as to what constitutes centric relation or how it is best determined and recorded for all patients.
The term CR has been known in dentistry for many years and no other subject in dentistry has been as controversial as has been the term CR.
Also in the past 50 years the definition of CR have undergone many changes.
In 1960s it was believed that the head of the condyle is present in the most posterior superior position in the glenoid fossa, now the definition has changed, instead of posterior superior, CR is defined as the most antero superior position in the glenoid fossa.
The term CR and centric occlusion (CO) are very close but both are very different terms. CR is a bone-to-bone relation and CO is a teeth to teeth relation.
To the early prosthodontist CR served as a reference position, to build CO in artificial denture. Today its importance to periodontal health, and in TMJ function in dentulous individuals is well understood.
For studying CR a through knowledge of mandibular movement, TMJ, muscles of mastication, ligaments all are essential.
As more knowledge is acquired about condylar movements and their characteristics during function, CR is being defined, redefined, argued about and debated.
Centric relation (CR) is a bone-to-bone relation in which the head of the condyle articulates with the glenoid fossa of temporal bone.
The importance of centric relation in complete denture prosthodontics has been well known for many years. Some dentist claim that a correct centric relation is the single most important measurement made in the construction of complete dentures. Unfortunately, however common agreement has been reached as to what constitutes centric relation or how it is best determined and recorded for all patients.
The term CR has been known in dentistry for many years and no other subject in dentistry has been as controversial as has been the term CR.
Also in the past 50 years the definition of CR have undergone many changes.
In 1960s it was believed that the head of the condyle is present in the most posterior superior position in the glenoid fossa, now the definition has changed, instead of posterior superior, CR is defined as the most antero superior position in the glenoid fossa.
The term CR and centric occlusion (CO) are very close but both are very different terms. CR is a bone-to-bone relation and CO is a teeth to teeth relation.
To the early prosthodontist CR served as a reference position, to build CO in artificial denture. Today its importance to periodontal health, and in TMJ function in dentulous individuals is well understood.
For studying CR a through knowledge of mandibular movement, TMJ, muscles of mastication, ligaments all are essential.
As more knowledge is acquired about condylar movements and their characteristics during function, CR is being defined, redefined, argued about and debated.
188 pages, Kindle Edition
Published May 23, 2024
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