Following clinical eruption, at what approximate age does root development finish for the maxillary central incisor?
Show answer Hide answer
Answer: D. 10 years
Explanation
Root development and apical closure for the permanent maxillary central incisor finish around age ten. Dental maturation charts confirm that maxillary central incisor roots achieve full length by the tenth year. The apex of this anterior tooth closes completely several years after clinical emergence into the mouth. Maxillary central incisors are prominent anterior teeth that typically erupt around seven to eight years of age. Apexogenesis describes the normal physiological development of the dental root and surrounding periapical tissues. Unclosed roots feature wide apical foramina that gradually constrict as root calcification processes conclude.
Endodontists must accurately understand root development timelines when treating traumatized young permanent teeth. Premature pulp necrosis can halt root development, requiring specialized interventions like apexification procedures. Radiographic evaluation of root apices helps clinicians determine appropriate patient age brackets in forensic investigations. Seven years corresponds more closely to the eruption age rather than the root completion time. Eight years of age is still too early for the complete apical closure of this incisor. Nine years is slightly earlier than the well established average timeline for maxillary incisor root completion.
Related questions
Q1. All interproximal embrasure spaces serve as a direct reflection of the______________?
Show answer Hide answer
Answer: A. Form of the teeth involved
Interproximal embrasure spaces are shaped directly by the individual contour, form, and alignment of adjacent teeth. The natural curvature and contact relationships of neighboring teeth create specific triangular spillwa...
Q2. Into which anatomical structure does the distobuccal cusp of tooth #27 (upper second molar) occlude? ______________?
Show answer Hide answer
Answer: A. Embrasure of 37 & 38
The distobuccal cusp of a maxillary second molar occludes precisely with the posterior embrasure. This functional contact occurs between the mandibular second and third permanent molars. Intercuspation ensures optimal ch...
Q3. What anatomical alignment forms the facial-occlusal line within the maxillary dental arch? _______________?
Show answer Hide answer
Answer: D. Non- supporting cusps
Non-supporting cusps form the outer boundary known as the facial-occlusal line. These are the facial cusps of maxillary posterior teeth during maximal intercuspation. They do not articulate directly into opposing central...
Q4. In general, where are the proximal contact areas of posterior teeth located relative to the center of the proximal surface ____________?
Show answer Hide answer
Answer: A. Facially and occlusally
Proximal contact areas of posterior teeth are generally located slightly facial to the faciolingual midline. These posterior contacts are also positioned consistently within the occlusal third of the proximal tooth surfa...
Q5. Root development and growth for all permanent teeth except third molars conclude by___________?
Show answer Hide answer
Answer: D. 17 years
Root development for almost all permanent teeth concludes by approximately seventeen years of age. Third molars are the notable exception, completing their root formation much later in early adulthood. Apical foramen clo...
Q6. In the majority of children, what is the normal sequence of permanent tooth eruption in the mandible? ____________?
Show answer Hide answer
Answer: C. 6-1-2-3-4-5-7-8
Permanent mandibular teeth erupt in a well-documented chronological sequence. The typical pattern begins with the first molar followed by incisors and premolars. This specific sequence ensures proper arch length maintena...