Questions and Answers Detailed Explanation
Permanent Maxillary First Premolars
The correct answer is C. Two.
Permanent maxillary first premolars typically have two roots. This is a unique feature as most other teeth in the dental arch tend to have a single root. These two roots are called the buccal and the palatal roots, with the buccal root being the larger of the two. This dual-root system allows for better stability and support for the tooth in performing its functions, which include tearing and crushing food.
Permanent Maxillary Second Premolars
The correct answer is G. Two.
Similar to the first premolars, permanent maxillary second premolars usually have two roots, although it is more common for them to have a single root compared to the first premolars. When two roots are present, they are also divided into buccal and palatal roots. The variation in root number can sometimes make dental procedures more complex, but typically, second premolars have a simpler root structure than the first premolars.
Teeth in a Quadrant of the Primary Dentition
The correct answer is A. 5.
In the primary (or deciduous) dentition, each quadrant contains five teeth. These are two incisors, one canine, and two molars. Primary dentition altogether consists of 20 teeth, divided equally among the four quadrants of the mouth. The primary dentition serves important roles in speech development, nutrition, and the maintenance of space for the eventual eruption of permanent teeth.
Teeth in a Quadrant of the Permanent Dentition
The correct answer is H. 8.
Each quadrant of the permanent dentition contains eight teeth. These include two incisors, one canine, two premolars, and three molars, the third being the wisdom tooth. In total, the permanent dentition consists of 32 teeth, assuming no teeth are missing and all wisdom teeth are present. The addition of premolars and an extra molar in comparison to the primary dentition allows for a more efficient processing of food, an important factor in overall health and nutrition.
Canines in a Quadrant of the Permanent Dentition
The correct answer is A. 1.
In each quadrant of the permanent dentition, there is only one canine. Canines play a pivotal role in the dentition due to their pointed shape and robust structure, making them ideal for tearing food. There are a total of four canines in the mouth, one in each quadrant, situated at the “corner” of the dental arch, flanked by incisors on one side and premolars on the other.
TERİMLER:
Quadrant: Ağzın, hem üst hem de alt çenenin orta hattından itibaren dört eşit parçaya bölünmesiyle oluşturulan her bir bölüm.
Primary (Deciduous) Dentition: İlk dişlerin seti, genellikle çocukluk döneminde bulunur ve sonrasında kalıcı dişlerle yer değiştirir.
Permanent Dentition: Kalıcı dişlerin seti, ilk dişler düştükten sonra ortaya çıkar ve genellikle yetişkinlik ömrü boyunca kalır.
