The Prevalence of Temporomandibular Disorders and Dental Attrition Levels in Patients with Posterior Crossbite and/or Deep Bite: A Preliminary Prospective Study
Table 2
Dental diagnoses at initial evaluation (according to TMD groups).
Initial diagnosis groups
Total
TMD-free (control)
Pain
DD
Mixed TMD
Total
150 (48%)
53 (17%)
54 (17%)
53 (17%)
310 (100%)
X-bite, n
No X-bite
88a, b (49%)
29a, b (16%)
39b (22%)
23a (13%)
179 (100%)
0.294
Anterior X-bite
9 (43%)
3 (14%)
4 (19%)
5 (24%)
21 (100%)
Posterior X-bite
40 (49%)
15 (18%)
8 (10%)
19 (23%)
82 (100%)
Mixed X-bite
13 (46%)
6 (21%)
3 (11%)
6 (21%)
28 (100%)
Open bite, n
No open bite
117 (48%)
42 (17%)
41 (17%)
42 (17%)
242 (100%)
0.713
Anterior open bite
20 (49%)
6 (15%)
8 (20%)
7 (17%)
41 (100%)
Posterior open bite
6 (46%)
3 (23%)
4 (31%)
0 (0%)
13 (100%)
Mixed open B
7 (50%)
2 (14%)
1 (7%)
4 (29%)
14 (100%)
Overbite, n
Normal or mild
110 (48%)
42 (18%)
42 (18%)
35 (15%)
229 (100%)
0.547
Deep bite
24 (52%)
6 (13%)
8 (17%)
8 (17%)
46 (100%)
Wear, n (erosion excluded)
Low
127 (49%)
45 (17%)
46 (18%)
41 (16%)
259 (100%)
0.856
High
23 (45%)
8 (16%)
8 (16%)
12 (24%)
51 (100%)
TMD = temporomandibular disorders; pain = pain = painful TMD; DD = disc displacement; mixed TMD = DD + PAIN. a, bEach subscript letter denotes a subset at reevaluation categories whose column proportions do not differ significantly from each other at the 0.05 level with Bonferroni correction. So, a is a significantly different proportion comparing to b proportion with Bonferroni correction. a, bProportions are overlapped. The proportion of normal bite is compared to not-normal bites.
