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Teeth

Teeth

The formation of teeth, also known as odontogenesis, is a complex process that begins in utero, around the sixth week of embryonic development. There are three stages to this process: the bud stage, the cap stage, and the bell stage.
In the bud stage, the tooth germ (an aggregation of cells) starts to form in the developing jawbone. During the cap stage, the tooth germ differentiates into enamel organ, dental papilla, and dental sac, which will later develop into the tooth's enamel, dentin and...

Tooth Anatomy

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The human tooth enables us to eat a variety of foods, speak clearly, and even aid in shaping our faces. Teeth are composed of various elements that work together. Here's a detailed look at the anatomy of a human tooth.
The Crown, Neck, and Root
The visible part of the tooth is referred to as the crown. It's covered by enamel, the hardest substance in the human body. The crown is uniquely shaped for each type of tooth, allowing for different functions such as cutting, tearing, or grinding food.

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The establishment of the oral microbiome begins before birth, challenging the long-held belief that the fetal oral cavity is sterile. The presence of oral microbes such as Streptococcus and Fusobacterium in amniotic fluid suggests that microbial exposure may occur in utero, potentially through translocation from the maternal oral or gastrointestinal tract. This early colonization primes the neonatal immune system and sets the stage for subsequent microbial succession. Maternal health,...

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In statistical epidemiology and health sciences, two essential metrics—prevalence and incidence—are fundamental for understanding disease dynamics within a population. These measures enable public health officials, epidemiologists, and researchers to assess the burden of diseases, allocate resources effectively, and design impactful public health policies and interventions.
Prevalence indicates the proportion of individuals in a population who have a specific disease or health condition at a...

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Systematic Assessment of Mammalian Skull Specimens for Dental and Temporomandibular Joint Pathology

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Hypodontia. Does the prevalence and distribution pattern differ in orthodontic patients?

Yildiray Sisman¹, Tancan Uysal, Ibrahim Erhan Gelgor

¹Assistant Professor and Department Chair, Department of Oral Diagnosis and Radiology, Faculty of Dentistry, Erciyes University, Kayseri, Turkey.

European Journal of Dentistry

|February 13, 2009

Summary

Hypodontia, the congenital absence of teeth, affects 7.54% of Turkish orthodontic patients, with higher prevalence in females. Maxillary lateral incisors are most commonly missing, necessitating early orthodontic intervention.

Keywords:

Hypodontia Panoramic radiograph Patient Prevalence Turkish

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Area of Science:

Dentistry
Orthodontics
Genetics

Background:

Hypodontia is a common developmental anomaly.
Prevalence varies across populations and ethnicities.
Early detection is crucial for orthodontic planning.

Purpose of the Study:

Determine hypodontia prevalence in a Turkish orthodontic sample.
Analyze hypodontia patterns by gender, arch, and tooth type.
Compare findings with international data.

Main Methods:

Retrospective analysis of 2413 orthodontic patient records.
Inclusion of orthopantomograms, study models, and patient history.
Evaluation of hypodontia in permanent dentition.

Main Results:

Overall hypodontia prevalence: 7.54% (8.09% female, 6.54% male).
Maxilla affected more than mandible; similar right/left distribution.
Most common missing teeth: maxillary lateral incisors, then premolars.

Conclusions:

Turkish hypodontia prevalence falls within reported ranges.
Anterior tooth agenesis or multiple missing teeth indicate significant orthodontic need.
Multidisciplinary approach and early detection optimize treatment planning.