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Developmental disturbances affecting size and number of teeth Developmental disturbances affecting size and number of teeth

Developmental disturbances affecting size and number of teeth - PowerPoint Presentation

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Uploaded On 2020-06-16

Developmental disturbances affecting size and number of teeth - PPT Presentation

Microdontia Macrodontia Anodontia Supernumerary teeth Hypodontia MICRODONTIA   It is defined as the size of teeth which is smaller than normal or outside the normal range of teeth size ID: 779136

normal teeth anodontia size teeth normal size anodontia supernumerary common maxillary larger slightly absence wisdom macrodontia congenital smaller mandibular

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Slide1

Developmental disturbances affecting size and number of teeth

MicrodontiaMacrodontiaAnodontiaSupernumerary teethHypodontia

Slide2

MICRODONTIA

 It is defined as the size of teeth which is smaller than normal (or) outside the normal range of teeth size

.

Teeth are normal or slightly smaller than normal teeth within the range of size of teeth, but the jaw size is slightly larger than the normal giving an Impression of Microdontia

.

Treatment mainly requires prosthodontic intervention as the teeth are smaller in size they are useful in preparing crowns and using the teeth as abutments.

Slide3

MACRODONTIA

Macrodontia is a condition in which any tooth or teeth appear larger than normal for that particular type of tooth

.

teeth

are Slightly Larger than average teeth

It is a result of presence of normal or slightly larger than normal teeth in small jaws. The difference in size gives the illusion of Macrodontia

Slide4

ANODONTIA

In dentistry, anodontia, also called anodontia

vera

, is a rare genetic disorder characterized by the congenital absence of all primary or 

permanent teeth. It is associated with the group of skin and nerve syndromes called the ectodermal dysplasias. Anodontia

is usually part of a syndrome and seldom occurs as an isolated entity

.

Partial

anodontia

, known as hypodontia or

oligodontia

, is the congenital absence of one or more teeth. Congenital absence of all wisdom teeth, or third molars, is relatively common.

Slide5

SUPERNUMERARY TEETH

Supernumerary teeth, also known as hyperdontia, is a term used to describe extra teeth that develop in addition to the 32 permanent teeth that we are predisposed to have.

The most common supernumerary teeth develop in between the maxillary central incisors, and are known as

mesiodens

. These teeth look like pegs. Molars that form in the area of the wisdom teeth are also a common type of supernumerary teeth, and are typically referred to as supernumerary wisdom teeth.

Slide6

HYPODONTIA

Hypodontia is defined as the congenital absence of one or a few teeth, and is also the most common anomaly in dental development. This condition occurs either individually or as part of the symptoms of a syndrome, and it is more common in permanent teeth than in deciduous teeth, reporting a prevalence of between 1.6

and

9.6 %

The most and the least frequent cases of absent teeth were the mandibular second premolars and the maxillary central incisor

. The most commonly absent teeth were the mandibular second premolars, the maxillary lateral incisors, the mandibular central incisor, and the maxillary second premolars, in that order.