This study was conducted in order to estimate the physiological tooth mobility in primary teeth.
The subjects in this study were 129 maxillary primary central incisors and 201 maxillary primary lateral incisors of patients between 2 years and 11 months-old and 9 years and 4 months-old. The teeth were clinically normal.These teeth were classified into 4 groups according to their degree of root resorption. The objective tooth mobilities were measured objectively by “Dental mobility checker®rdquo;.
The results were as follows: Among the primary central incisors, at stage 0, the mobility value was between 1.9 and 3.0 (average: 2.5). At stage I, the mobility value was between 2.1 and 3.8, (average: 2.8), and at stage II, the mobility value was between 2.1 and 6.4, (average: 4.0), and at stage IR, the mobility value was between 3.4 and 12.6, (average: 7.4). There were significant differences in tooth mobility among all of the stages (p<0.01).
Among the primary lateral incisors, at stage 0, the mobility value was between 1.9 and 4.5 (average: 3.1). At stage I, the mobility value was between 2.2 and 5.9, (average: 3.7), and at stage II, the mobility value was between 3.1 and 6.6, (average 4.3), and at stage III, the mobility value was between 3,7 and 14.9, (average: 7.9). There was a significant difference in tooth mobility between stage I and stage II (p<0.05). There were also significant differences in tooth mobility among the rest of the stages (p<0.01).
In conclusion, it is suggested that physiological tooth mobility in primary teeth is estimated objectively by the “Dental mobility checker®”.