Age differences in adult dentoalveolar heights

Area of Science:

• Dentofacial Anthropology
• Human Aging Studies
• Craniofacial Morphology

Background:

• Previous research indicated increased lower anterior face height with age.
• Age-related changes in facial morphology are complex and require detailed investigation.
• Understanding dentoalveolar height changes is crucial for assessing craniofacial development and aging.

Purpose of the Study:

• To investigate age-related differences in maxillary and mandibular dentoalveolar heights.
• To analyze specific components of dentoalveolar height, such as extra-alveolar incisor height and anterior ridge height.
• To compare these changes across different adult age groups in women.

Main Methods:

• Utilized lateral head films from 191 dentate Finnish women.
• Divided participants into three age groups: 20-29, 30-49, and 50-81 years.
• Calculated 26 variables from digitized reference points to measure dentoalveolar heights.

Main Results:

• Maxillary and mandibular anterior dentoalveolar heights were significantly greater in middle and older age groups compared to the young group.
• Mandibular incisor extra-alveolar height increased significantly with age, unlike in the maxilla.
• Anterior mandibular ridge height differences between older and younger groups were less pronounced than in the maxilla.

Conclusions:

• Adult aging is associated with significant increases in anterior dentoalveolar heights of both the maxilla and mandible.
• Age-related increases in mandibular dentoalveolar height are partly due to changes in incisor height.
• No significant dentoalveolar morphological differences were found between middle-aged and older adult women.