Table 3 The relationships between predictor variables and the 3D deviations between the planned and placed implant positions at the entry and tip of the implant body among each surgical guide fabrication methods
| Â | Large 3D deviation at the entry of the implant body | Large 3D deviation at the tip of the implant body | ||||
|---|---|---|---|---|---|---|
Mean ± SD | Correlation coefficient | p value | Mean ± SD | Correlation coefficient | p value | |
Factors related to each surgical guide | ||||||
 Sex | ||||||
  Male | 0.642 ± 0.386 | – | 0.325‡ | 0.976 ± 0.514 | – | 0.763‡ |
  Female | 0.667 ± 0.377 | – | 0.987 ± 0.524 | – | ||
 Age at implant placement surgery | – | − 0.102 | 0.025§ | – | − 0.082 | 0.073§ |
 Number of coronal teeth | – | − 0.137 | 0.003§ | – | − 0.074 | 0.106§ |
 Number of teeth with metal restorations | – | − 0.159 | < 0.001§ | – | − 0.037 | 0.418§ |
 Number of placed implants | – | 0.094 | 0.039§ | – | 0.056 | 0.224§ |
 Dentition defect type | ||||||
  Class I | 0.572 ± 0.335 | – | 0.002†| 0.883 ± 0.443 | – | 0.006†|
  Class II | 0.680 ± 0.399 | – | 0.996 ± 0.524 | – | ||
  Class III | 0.586 ± 0.333 | – | 0.890 ± 0.447 | – | ||
  Class IV | 0.691 ± 0.428 | – | 1.217 ± 0.622 | – | ||
  Edentulism | 0.761 ± 0.389 | – | 1.044 ± 0.559 | – | ||
 Number of fixation pins | – | 0.137 | 0.003§ | – | 0.141 | 0.002§ |
Factors related to each implant body | ||||||
 Shape of implant body | ||||||
  Straight | 0.665 ± 0.405 | – | 0.876‡ | 1.167 ± 0.642 | – | 0.028‡ |
  Tapered | 0.657 ± 0.376 | – | 0.956 ± 0.495 | – | ||
 Implant width | ||||||
  NP | 0.676 ± 0.376 |  | 0.702†| 1.003 ± 0.522 | – | 0.836†|
  RP | 0.649 ± 0.383 | – | 0.972 ± 0.514 | – | ||
  WP | 0.660 ± 0.376 | – | 0.993 ± 0.567 | – | ||
 Implant length | – | 0.103 | 0.024§ | – | 0.253 | < 0.001§ |
 Implant location | ||||||
  Anterior | 0.682 ± 0.370 | – | 0.301‡ | 1.018 ± 0.545 | – | 0.472‡ |
  Posterior | 0.649 ± 0.383 | – | 0.970 ± 0.510 | – | ||
 Implant location | ||||||
  Maxillary | 0.678 ± 0.383 | – | 0.203‡ | 1.031 ± 0.525 | – | 0.021‡ |
  Mandibular | 0.635 ± 0.375 | – | 0.926 ± 0.510 | – | ||
 Immediate implant placement | ||||||
  With | 0.833 ± 0.395 | – | 0.011‡ | 1.288 ± 0.503 | – | 0.002‡ |
  Without | 0.648 ± 0.377 | – | 0.965 ± 0.516 | – | ||
 Bone augmentation | ||||||
  With | 0.657 ± 0.405 | – | 0.81‡ | 1.095 ± 0.720 | – | 0.510‡ |
  Without | 0.658 ± 0.378 | – | 0.974 ± 0.501 | – | ||
 Alveolar bone quality | – | − 0.008 | 0.859§ | – | − 0.009 | 0.839§ |
 Distance between guide sleeve bottom to bone surface | – | 0.070 | 0.123§ | – | 0.051 | 0.262§ |
 Bone surface inclination X | – | − 0.109 | 0.017§ | – | − 0.020 | 0.664§ |
 Bone surface inclination Y | – | − 0.141 | 0.002§ | – | − 0.087 | 0.057§ |