REASONS FOR FAILURE OF DENTITION

Reasons for Failure of Dentition



Reasons for Failure of Dentition

Introduction

Humans have primary and permanent dentition. The primary dentition consists of 10 maxillary and 10 mandibular Dentition. The primary Dentition are exfoliated and replaced by the permanent dentition, which consist of 16 maxillary and 16 mandibular Dentition.

Classes of Human Dentition: Form and Function

Human Dentitions are divided into class on the basis of form and function. The primary and permanent dentition includes incisor, canine, and molar classes. The forth class, the premolar, is found only in the permanent dentition. Tooth form predicts the function of Dentition into functional categories. Because the diet of human consists of animal and vegetable foods, the human dentition is called omnivorous (Adovasio, 2005).

Background

Failure of restoration may be caused by the dentist, the patients, continuing pathology, inadequacies in materials and a combination of all four. The dentist may be responsible for treatment planning errors and Technical errors. The treatment plan must be tailored to fit the patient and be based on an accurate diagnosis of the pathologies present. It must fit the dentist's skills and facilities.

For instance, a treatment plan based on the skills and experience of a specialist and his supporting team is likely to be quite beyond the reach of the average general practitioner and his. Poor treatment planning, then, is a major problem, often compounded by technical errors.

Simple, plans, made up easy stages are always best, no matter how skilled the operator. Unreasonable demands on technical expertise that does not exist, and patient motivation and awareness that is half-hearted, are recipes for disaster. It would be boring world if everything was perfect, and thankfully a lot of less than perfect dentistry requires no treatment, other than regular observation (Angus, 2007).

Deciduous dentition

The first milk teeth start to lose 5 or 6 years old being replaced by permanent teeth and second teeth.

The deciduous dentition, also known as milk teeth, teething infant or primary dentition is the first set of teeth that appear during the ontogeny of humans as in other mammals. They develop during the embryonic and become visible (dental eruption) in the mouth during infancy. They are usually replaced after his fall, for permanent, although in the absence thereof, can be preserved and remain functional for some years. In all mafimeros few exceptions, are exchanged only incisors, canines and premolars and molars appearing as part of the tooth series final. This last is called Hemifiodoncia (Ash, 2003).

Chronology of infant teething

Complete primary dentition

The appearance of the first teeth usually at 6 months and lasts until about 30 months, although some babies have their first tooth at three months or delay the departure until their first birthday. The approximate chronology of appearance is:

6 to 7 months: lower central incisors.

7 months: upper central incisors.

8 months: upper lateral incisors.

7 to 8 months: lower lateral incisors.

16 to 20 months: lower and upper canines.

12 to 16 months: lower and upper first molars (so-called "molar" because the crews is evolutionarily Premolar 3, since during the evolution of human dentition have lost the 1st and 2nd premolar)

21 to 30 months: lower and upper second molars (also incorrectly ...