Question

how the sequence of eruption of permanent dentition plays a role in the establishment of a normal occlusion

Answer 1

Occlusion is defined as contact relationship of maxillary and mandibular teeth when the mouth is fully closed.It can influence a person's facial profile and also the health of oral cavity.It is not due to improved with dental treatment called orthodontics.

Primary dentition of occlusion is completely established by 3 years age and lasts until 6 years of age when the permanent tooth begins to erupt.The association between morphological aspects in the primary dentition and transition to the permanent dentition provides the possibility bof predicting the final permanent occlusion.Anteroposterior relation bof maxillary and mandibular permanent molars is an important criteria for recognition of malocclusions.That determines the necessity of interceptive orthodontics.

Childhood is the mirror in which the propensities of adulthood are reflected , similarly to the type of occlusion in the primary dentition predicts the occlusion of permanent dentition.The anteroposterior changes thet occur in the occlusion between the primary and permanent dentition is crucial clinicians involved in orthodontic treatment.

Normal characteristics; Spacing between anterior teeth,primate space,low overjet and overbite,flush terminal plane molar relation, and ovoid arch form .The deviations in occlusion in primary dentition would be carried to succeeding permanent dentition and to a more pronounced degree.Spacing is a common condition in primary dentition and constitue a very important feature of the dentition as it an indicator of favourable development of permanent occlusion.Spacing ofen presents between all anterior primary teeth with the most marked spaces present being mesial to cannine in the mandible.These are called primate spaces.The secondary or development spaces which are commonly found between incisors are termed as physiological spaces.The incident of spacing in primary dentition varies from 42.9%to 98%. lack of spacing suggests severe risk for crowding in the permanent dentition.

Spacing is more common in the maxilla than in the mandible and spaces are observed more among boys rather girls .Studies related to spacing and occlusion of primary dentition have confirmed that the occlusal characteristics varies among populations and groups.