Dental Anatomy and Occlusion Review

A collection of flashcards covering key concepts, definitions, and terminologies related to Dental Anatomy and Occlusion based on the lecture notes.

What is the main subject of the BDS 200 course?

Dental Anatomy and Occlusion.

Who is the instructor for BDS 200?

Dr. Hanan Ahmad.

What is the focus of the student learning outcome regarding dental terminology?

Understand the key terminology related to dental anatomy.

How many permanent teeth are there in total?

32 permanent teeth.

What is the dental formula for primary teeth?

2I, 1C, 2M = 5 teeth in each quadrant.

What is the dental formula for permanent teeth?

2I, 1C, 2PM, 3M = 8 teeth in each quadrant.

What separates primary dentition from permanent dentition?

Primary dentition includes only incisors, canines, and molars, while permanent dentition adds premolars and third molars.

What are the four basic types of teeth in permanent dentition?

Incisors, canines, premolars, and molars.

What percentage of the overall grade is based on the final exam in this course?

35%.

What are the anatomical parts of a tooth?

Enamel, dentin, cementum, pulp, crown, root.

What is the clinical crown?

The portion of the tooth that is visible in the mouth.

What structure connects the enamel of the crown with the cementum of the root?

Cemento-enamel junction.

What type of teeth are present in deciduous dentition?

Incisors, canines, and molars.

What are the two components of the dental pulp?

Coronal pulp and radicular pulp.

Define 'occlusal surface' as it pertains to tooth anatomy.

The surface of the posterior teeth that comes in contact with the teeth in the opposite jaw when the mouth is closed.

What is the function of incisors?

To bite into food.

How many cusps do molars typically have?

Four or five cusps.

What is the significance of the pulp chamber?

It contains nerves and blood vessels for the tooth.

What defines the cusp of a tooth?

A pointed projection on the tooth crown.

What is meant by the term 'mesial surface'?

The surface of the tooth facing towards the median line.

What is a developmental groove?

A shallow groove or line between the primary parts of the crown or root.

What anatomical feature is located at the tip of a tooth root?

Apex.

What is the term for the space on each side of a contact area?

Embrasure.

What type of tooth structures are the marginal ridges?

Rounded borders of the enamel that form the mesial and distal margins of occlusal surfaces.

What is the role of alveolar mucosa?

It covers the alveolar process of the maxilla and mandible.

What is the primary function of dental pulp?

Nutritive, sensory, defensive/reparative, and formative.

How is dentin characterized in terms of composition?

70% inorganic, 20% organic, 10% water.

What happens to the pulp chamber as a person ages?

It gets smaller due to the deposition of secondary dentin.

What tissue covers the crown of the tooth?

Enamel.

What is the function of cementum?

To cover the root of a tooth and anchor the periodontal ligament.

How many quadrants are there in the dental arch?

Four quadrants.

What does the term 'triangular ridge' refer to?

A ridge descending from the tips of the cusps of molars and premolars.

What is the maxillary tuberosity?

A rounded eminence located at the lower part of the maxilla, especially prominent after wisdom tooth growth.

What significance does the CEJ have in periodontal disease?

It is a landmark for probing the level of attachment of fibers to the tooth.

What are the characteristics of sclerotic dentin?

It forms in response to mild irritation or aging and contains obliterated dentinal tubules.

What is the universal numbering system for permanent teeth?

Teeth are numbered 1-32 starting from the maxillary right third molar.

What are the characteristics of the primary pulp compared to permanent pulp?

Primary pulp has more prominent pulp horns, while permanent pulp tends to have less volume.

Which tooth type usually has a single root?

Anterior teeth, mandibular premolars, and maxillary second premolars.

What are the indications for the developmental groove in teeth?

Found on buccal and lingual surfaces of posterior teeth.

What structures are classified as hard tissues of a tooth?

Enamel, dentin, and cementum.

What are the dimensions of the free gingival margin?

1.5-2 mm of gingival tissue surrounding the neck of the tooth.

What are papillae in the context of oral anatomy?

Interdental gingiva that fill the space between two adjacent teeth.

What is the lingual frenulum?

A muscular attachment connecting the tongue to the floor of the mouth.

What are the three types of dentin?

Primary dentine, secondary dentine, and tertiary dentine.

What does the term 'buccal surface' refer to?

The surface of posterior teeth facing the cheek.

What is a) pulp canal; b) pulp chamber?

a) The part of the dental pulp in the root; b) the part of dental pulp in the crown.

What are the two main portions of the dental pulp?

Coronal pulp and radicular pulp.

How many types of molars are identified in permanent dentition?

Two or three upper and two or three lower molars.

What is the significance of the cemento-enamel junction in dental procedures?

It marks the end of the crown and the beginning of the root.

What does 'occlusal pit' refer to?

A small depression on the crown usually associated with developmental grooves.

What is the FDI system used for in dentistry?

It's a two-digit tooth numbering system used internationally.

How many teeth does the primary dentition consist of, according to the quadrant?

5 teeth per quadrant making a total of 20 teeth.

What is the role of dental pulp during injury?

To mediate pain sensation and form reparative dentin.

Name the three main tissues of the tooth.

Enamel, dentin, cementum.

Describe the term 'gingival sulcus.'

The space between the tooth and the free gingiva.

What does 'periapical tissues' refer to?

Tissues surrounding the apex of the tooth root.

How are teeth classified according to dentition?

Deciduous and permanent dentition.

What is the benefit of identifying accessory canals in endodontics?

They facilitate communication between the pulp and periodontal ligaments.

What are the structures that form around the pulp chamber?

Dentin, which covers the chamber occlusally.

Define 'tooth mobility'.

The degree of movement of a tooth within its socket.

What does a 'proximity surface' refer to?

The surface of a tooth facing adjacent teeth in the same arch.

What does the term 'occlusal shearing' indicate?

It refers to the grinding or crushing action between opposing teeth.

What type of dentition consists only of molars, canines, and incisors?

Primary dentition.

Distinguish between 'anatomical crown' and 'clinical crown'.

Anatomical crown is covered with enamel, while clinical crown is visible in the mouth.

What is the incisive papilla?

A small fold of mucous membrane situated at the anterior end of the hard palate.

What is the purpose of the palatine rugae?

To aid in the formation of speech and food manipulation.

Name the epithelium that makes up the oral mucosa.

Stratified squamous epithelium.

What condition can occur if the periodontal disease progresses?

Attachment loss and eventual tooth mobility.

Identify one feature distinguishing primary molars from permanent molars.

Primary molars have no premolars present.

How does enamel protect a tooth?

It provides a hard, mineralized surface that resists decay.

What are the two zones contained in the pulp layer?

Cell-rich zone and odontoblastic layer.

What is the role of the buccal groove?

Facilitates food movement during mastication.

What anatomy forms the junction where soft palate transitions to hard palate?

Vibrating line.

In terms of tooth development, what do lobes signify?

Centers of calcification from which all teeth develop.