Al-Jarsha, Mohammed Y. and Ayoub, Ashraf F. and Almgran, Mohammed M. and Liu, Chieh-Han and Robertson, Douglas P. and Naudi, Kurt B. (2024) The precision of drill calibration for dynamic navigation. Journal of Dentistry, 146: 105032. ISSN 0300-5712
AI Summary:
The study aimed to quantify the reproducibility of drill calibration in dynamic navigation guided placement of dental and zygomatic implants. The results showed a satisfactory inter-rater reproducibility, with a precision range of 0.3-3.7 mm.AI Topics:
Objectives:
To quantify the reproducibility of the drill calibration process in dynamic navigation guided placement of dental implants and to identify the human factors that could affect the precision of this process in order to improve the overall implant placement accuracy.
Methods:
A set of six drills and four implants were calibrated by three operators following the standard calibration process of NaviDent® (ClaroNav Inc.). The reproducibility of the position of each tip of a drill or implant was calculated in relation to the pre-planned implants’ entry and apex positions. Intra- and inter-operator reliabilities were reported. The effects of the drill length and shape on the reproducibility of the calibration process were also investigated. The outcome measures for reproducibility were expressed in terms of variability range, average and maximum deviations from the mean distance.
Results:
A satisfactory inter-rater reproducibility was noted. The precision of the calibration of the tip position in terms of variability range was between 0.3 and 3.7 mm. We noted a tendency towards a higher precision of the calibration process with longer drills. More calibration errors were observed when calibrating long zygomatic implants with non-locking adapters than with pointed drills. Flexible long-pointed drills had low calibration precision that was comparable to the non-flexible short-pointed drills.
Conclusion:
The clinicians should be aware of the calibration error associated with the dynamic navigation placement of dental and zygomatic implants. This should be taken in consideration especially for long implants, short drills, and long drills that have some degree of flexibility.
Clinical significance:
Dynamic navigation procedures are associated with an inherent drill calibration error. The manual stability during the calibration process is crucial in minimising this error. In addition, the clinician must never ignore the prescribed accuracy checking procedures after each calibration process.
Al-Jarsha, Mohammed Y.
Author
Al-Jarsha, Mohammed Y. and Diao, Yufeng and Zhao, Guodong and Imran, Muhammad A. and Ayoub, Ashraf and Robertson, Douglas and Naudi, Kurt B. (2025) Dynamic navigation-guided robotic placement of zygomatic implants. Journal of Dentistry, 153: 105463. ISSN 0300-5712
Al-Jarsha, Mohammed Y. and Ayoub, Ashraf F. and Almgran, Mohammed M. and Liu, Chieh-Han and Robertson, Douglas P. and Naudi, Kurt B. (2024) The precision of drill calibration for dynamic navigation. Journal of Dentistry, 146: 105032. ISSN 0300-5712
See full publications listAyoub, Ashraf F.
Author
Ju, Xiangyang and Ayoub, Ashraf and Morley, Stephen (2025) Quantitative assessment of facial paralysis using dynamic 3D photogrammetry and deep learning: a hybrid approach integrating expert consensus. Sensors, 25 (11): 3264. ISSN 1424-8220
Al-baker, Bodore and Ju, Xiangyang and Mossey, Peter and Ayoub, Ashraf (2025) The accuracy of automated facial landmarking - a comparative study between Cliniface software and patch-based Convoluted Neural Network algorithm. European Journal of Orthodontics, 47 (2): cjaf009. ISSN 0141-5387
Saghafi, Hamideh and Benington, Philip and Ju, Xiangyang and Ayoub, Ashraf (2025) Is the orthodontics-first method more stable than the surgery-first approach for orthognathic correction of maxillary deficiency? Journal of Cranio-Maxillofacial Surgery, 53 (4). pp. 312-317. ISSN 1010-5182
See full publications listAlmgran, Mohammed M.
Author
Al-Jarsha, Mohammed Y. and Ayoub, Ashraf F. and Almgran, Mohammed M. and Liu, Chieh-Han and Robertson, Douglas P. and Naudi, Kurt B. (2024) The precision of drill calibration for dynamic navigation. Journal of Dentistry, 146: 105032. ISSN 0300-5712
See full publications listLiu, Chieh-Han
Author
Al-Jarsha, Mohammed Y. and Ayoub, Ashraf F. and Almgran, Mohammed M. and Liu, Chieh-Han and Robertson, Douglas P. and Naudi, Kurt B. (2024) The precision of drill calibration for dynamic navigation. Journal of Dentistry, 146: 105032. ISSN 0300-5712
AlOtaibi, Noura M. and Liu, Chieh-Han and Benington, Philip C.M. and Ayoub, Ashraf F. (2023) Improvement in facial aesthetics of orthognathic patients after surgery-first approach. British Journal of Oral and Maxillofacial Surgery, 61 (10). pp. 666-671. ISSN 0266-4356
See full publications listRobertson, Douglas P.
Author
Al-Jarsha, Mohammed Y. and Diao, Yufeng and Zhao, Guodong and Imran, Muhammad A. and Ayoub, Ashraf and Robertson, Douglas and Naudi, Kurt B. (2025) Dynamic navigation-guided robotic placement of zygomatic implants. Journal of Dentistry, 153: 105463. ISSN 0300-5712
Al-Jarsha, Mohammed Y. and Ayoub, Ashraf F. and Almgran, Mohammed M. and Liu, Chieh-Han and Robertson, Douglas P. and Naudi, Kurt B. (2024) The precision of drill calibration for dynamic navigation. Journal of Dentistry, 146: 105032. ISSN 0300-5712
See full publications listNaudi, Kurt B.
Author
Al-Jarsha, Mohammed Y. and Ayoub, Ashraf F. and Almgran, Mohammed M. and Liu, Chieh-Han and Robertson, Douglas P. and Naudi, Kurt B. (2024) The precision of drill calibration for dynamic navigation. Journal of Dentistry, 146: 105032. ISSN 0300-5712
See full publications listAvailable under License Creative Commons Attribution.
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