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01:15Teeth
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...
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...
02:48Radioactive Decay and Radiometric Dating
Radioactivity is a spontaneous disintegration of an unstable nuclide and is a random process, as all the nuclei in the sample do not decay simultaneously. The number of disintegrations per unit time is called the activity (A), which is directly proportional to the number of nuclei in the sample. The decay constant (λ) is an average probability of decay per nucleus in unit time.
01:24X-ray Imaging
German physicist Wilhelm Röntgen (1845–1923) was experimenting with electrical current when he discovered that a mysterious and invisible "ray" would pass through his flesh but leave an outline of his bones on a screen coated with a metal compound. In 1895, Röntgen made the first durable record of the internal parts of a living human: an "X-ray" image (as it came to be called) of his wife’s hand. Scientists worldwide quickly began their own experiments with X-rays, and by 1900, X-ray was widely...
01:21Tooth Anatomy
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.
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.
01:30Radiological Investigation I: X-ray and CT
Radiological investigations, including X-rays and computed tomography (CT) scans, are critical for diagnosing and evaluating various medical conditions. These imaging techniques provide valuable insights into the body's internal structures, aiding in the detection of abnormalities, assessment of disease progression, and development of treatment strategies. This article delves into two primary radiological investigations, chest X-rays and CT scans, outlining their purpose, procedures, and the...
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Dento maxillo facial radiology·2011
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Dental radiographic indicators, a key to age estimation.
1Department of Oral Medicine and Radiology, SPD College & Hospital, DMIMSU, Sawangi-M, Wardha, India. artipanch@gmail.com
Dento Maxillo Facial Radiology
|April 16, 2011
Summary
Radiological methods, particularly dental radiography, offer a simple and cost-effective approach to human age identification. This review highlights their importance in forensic dentistry for accurate age estimation.
Area of Science:
- Forensic Anthropology
- Radiology
- Odontology
Background:
- Accurate human age identification is crucial in forensic investigations.
- Radiological techniques provide valuable tools for age estimation.
Purpose of the Study:
- To review and describe radiological methods used for human age identification.
- To discuss the application and importance of these methods in age assessment.
Main Methods:
- A literature survey was conducted to identify relevant studies.
- 46 articles were included in the review.
Main Results:
- Radiography, especially dental radiography, is a simple, cost-effective method for age identification.
- Assessment of tooth calcification, crown/root formation, and eruption stages are key indicators.
- Radiographic and tomographic imaging are essential in forensic dentistry for identification.
Conclusions:
- Forensic dentists can select appropriate radiological methods for age estimation.
- The validity of age assessment depends on the chosen method and its correct application.
- A multifactorial approach and consideration of legal requirements optimize age assessment.