Table 4 Associations between periodontal parameters and radiological changes and between periodontal parameters and clinical outcomes
| Â | Plaque index (PLI) | Bleeding index (BI) | Gingival recession (GR) (mm) | Probing depth (PD) (mm) | Number of remaining teeth |
|---|---|---|---|---|---|
VAS neck pain | 0.035 (0.802) | − 0.220 (0.110) | 0.014 (0.922) | − 0.208 (0.131) | − 0.128 (0.358) |
JOA | − 0.001 (0.996) | 0.168 (0.223) | 0.042 (0.762) | 0.057 (0.681) | − 0.197 (0.154) |
NDI | − 0.337 (0.013) * | − 0.426 (0.001) ** | − 0.124 (0.372) | − 0.346 (0.010) * | 0.067 (0.628) |
ROM (°) | |||||
C2-3 | 0.079 (0.430) | 0.046 (0.672) | 0.147 (0.290) | − 0.228 (0.097) | 0.036 (0.798) |
C3-4 | 0.253 (0.065) | 0.148 (0.286) | 0.040 (0.775) | 0.170 (0.219) | − 0.266 (0.052) |
C4-5 | − 0.031 (0.826) | 0.142 (0.307) | − 0.200 (0.146) | 0.097 (0.486) | − 0.143 (0.302) |
C5-6 | − 0.106 (0.447) | − 0.226 (0.100) | − 0.185 (0.181) | 0.007 (0.901) | 0.103 (0.460) |
C6-7 | − 0.076 (0.587) | 0.054 (0.700) | 0.009 (0.946) | − 0.001 (0.996) | 0.117 (0.398) |
Cervical lordosis (°) | − 0.119 (0.393) | − 0.046 (0.740) | − 0.174 (0.207) | − 0.084 (0.545) | 0.042 (0.761) |
Disc height (mm) | |||||
C2-3 | |||||
  Anterior | 0.236 (0.086) | 0.053 (0.706) | 0.115 (0.212) | − 0.261 (0.057) | − 0.111 (0.426) |
  Middle | − 0.145 (0.296) | − 0.008 (0.954) | 0.013 (0.928) | − 0.086 (0.536) | 0.114 (0.201) |
  Posterior | 0.161 (0.103) | − 0.045 (0.747) | 0.016 (0.911) | − 0.174 (0.209) | 0.170 (0.218) |
C3-4 | |||||
  Anterior | 0.062 (0.657) | 0.175 (0.206) | 0.171 (0.061) | 0.078 (0.573) | 0.118 (0.196) |
  Middle | 0.059 (0.670) | 0.123 (0.377) | − 0.096 (0.489) | 0.078 (0.576) | − 0.200 (0.148) |
  Posterior | − 0.222 (0.106) | − 0.191 (0.166) | − 0.033 (0.810) | − 0.207 (0.134) | − 0.221 (0.109) |
C4-5 | |||||
  Anterior | 0.150 (0.280) | − 0.164 (0.2377) | 0.004 (0.974) | − 0.185 (0.180) | − 0.123 (0.375) |
  Middle | − 0.029 (0.837) | − 0.118 (0.396) | − 0.025 (0.859) | − 0.085 (0.540) | 0.138 (0.321) |
  Posterior | 0.075 (0.590) | 0.077 (0.582) | − 0.130 (0.350) | − 0.015 (0.917) | − 0.028 (0.839) |
C5-6 | |||||
  Anterior | 0.154 (0.095) | − 0.097 (0.484) | − 0.020 (0.887) | − 0.137 (0.332) | 0.181 (0.189) |
  Middle | − 0.149 (0.284) | 0.076 (0.584) | 0.030 (0.829) | − 0.050 (0.719) | 0.049 (0.743) |
  Posterior | 0.019 (0.894) | 0.073 (0.602) | − 0.177 (0.200) | 0.084 (0.545) | 0.155 (0.262) |
C6-7 | |||||
  Anterior | − 0.226 (0.101) | − 0.239 (0.082) | − 0.091 (0.513) | − 0.075 (0.591) | − 0.039 (0.780) |
  Middle | − 0.014 (0.921) | 0.231 (0.093) | − 0.015 (0.915) | 0.215 (0.091) | 0.243 (0.077) |
  Posterior | − 0.129 (0.351) | 0.107 (0.442) | − 0.028 (0.839) | 0.166 (0.232) | 0.023 (0.870) |