| neck of tooth | The slightly constricted part of a tooth, between the crown and the root. Synonym: cervix dentis, cervical margin of tooth, cervical zone of tooth, collum dentis, dental neck. (05 Mar 2000) |
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| neonatal tooth | A tooth erupting up to 30 days after birth. (05 Mar 2000) |
| stomach tooth | One of the lower canine teeth. (05 Mar 2000) |
| nonvital tooth | A tooth with a nonvital pulp. (05 Mar 2000) |
| succedaneous tooth | One of the 32 teeth belonging to the second or permanent dentition; eruption of the permanent teeth begins from the fifth to the seventh year, and is not completed until the seventeenth to the twenty-third year, when the last of the wisdom teeth appears. Synonym: dens permanens, dens succedaneus, second tooth, secondary dentition, succedaneous dentition, succedaneous tooth. (05 Mar 2000) |
| normally posed tooth | A tooth in correct spatial relationship with its antagonist. (05 Mar 2000) |
| dead tooth | A misnomer for pulpless tooth. (05 Mar 2000) |
| deciduous tooth | A tooth of the first set of teeth, comprising 20 in all, that erupts between the mean ages of 6 and 28 months of life. Synonym: dens deciduus, baby tooth, deciduous dentition, dens lacteus, first dentition, milk tooth, primary dentition, primary tooth, temporary tooth. (05 Mar 2000) |
| dental implants, single-tooth | Devices, usually alloplastic, surgically inserted into or onto the jawbone, which support a single prosthetic tooth and serve either as abutments or as cosmetic replacements for missing teeth. (12 Dec 1998) |
| syndrome, cracked tooth | A toothache caused by a broken tooth (tooth fracture) without associated cavity or advanced gum disease. Biting on the area of tooth fracture can cause severe sharp pains. These fractures are usually due to chewing or biting hard objects such as hard candies, pencils, nuts, etc. Sometimes, the fracture can be seen by painting a special dye on the cracked tooth. Treatment usually is to protect the tooth with a crown. However, if placing a crown does not relieve pain symptoms, a root canal procedure may be necessary. (12 Dec 1998) |
| devitalised tooth | A misnomer for a pulpless tooth. (05 Mar 2000) |
| distal surface of tooth | The contact surface of a tooth that is directed away from the median plane of the dental arch; opposite to the mesial surface of a tooth. Synonym: facies distalis dentis. (05 Mar 2000) |
| impacted tooth | <dentistry> A tooth which is within the alveolus (the tooth socket within the alveolar bone of the jaw) and is prevented from erupting into its normal position. (27 Sep 1997) |
| incisor tooth | A tooth with a chisel-shaped crown and a single conical tapering root; there are four of these teeth in the anterior part of each jaw, in both the deciduous and the permanent dentitions. Synonym: dens incisivus. (05 Mar 2000) |
| temporary tooth | A tooth of the first set of teeth, comprising 20 in all, that erupts between the mean ages of 6 and 28 months of life. Synonym: dens deciduus, baby tooth, deciduous dentition, dens lacteus, first dentition, milk tooth, primary dentition, primary tooth, temporary tooth. (05 Mar 2000) |