Decision tree for early loading protocols in everyday practice
Introduction
Patients’ expectations of shorter time to teeth pushes the quest for minimizing trauma and accelerating osseointegration. In contrast to the conventional drills, N1 system using low-speed (50 rpm) drill, eliminates the need for irrigation preserving the mixture of bone chips, connective tissue stroma, and blood, thereby augmenting the osteogenic capacity of the preparation site to quicker osseointegrate the gradually anodized N1 implant with the moderately rough TiUltra surface. The enhanced osseointegration can in turn enable early loading. In his practice, Dr. Cassity derived a decision tree to guide the timing of the iOS scans based on the respective insertion torques of the N1 implants.
KEY RESULTS
- The decision tree defining the timing of the iOS digital impression was guided by the final insertion torque values (<20 Ncm: 8-12 weeks; 20-35 Ncm: 6 weeks; 35-50 Ncm: 4 weeks; > 50 Ncm: 0-2 weeks).
- The timing of iOS was indicative of suitability for referral for the final prosthesis delivery within 2-3 weeks.
CITATION
Cassity, K. Academy of Osseointegration 2024 Annual Meeting, Charlotte, North Carolina, USA.
REFERENCES
1. Fabbri, G, Staas, T, Urban, I (2022) A Retrospective Observational Study Assessing the Clinical Outcomes of a Novel Implant System with Low-Speed Site Preparation Protocol and Tri-Oval Implant Geometry. J Clin Med. 11 (16):4859
Authors

Questions
Ask a questionLoading Protocols of ITV and ISQ from documented research.
Dr. Cassity - with the well documented "Stability Dip" that occurs at 3-4 week post-implant insertion - an insertion torque of 35-50 Ncm and a 10% decrease would put the value below 48 Ncm that the research from Dr. Tirisi documents for a "loading protocol", along with an ISQ at or above 70. Does your drilling protocol eliminate these parameters or eliminate the stability dip completely?
Dr. Cassity - with the well documented "Stability Dip" that occurs at 3-4 week post-implant insertion - an insertion torque of 35-50 Ncm and a 10% decrease would put the value below 48 Ncm that the research from Dr. Tirisi documents for a "loading protocol", along with an ISQ at or above 70. Does your drilling protocol eliminate these parameters or eliminate the stability dip completely?
Is this decision tree valid for all surgical protocols (delay, early, immediate - 1/2 stages)?
Is this applied for regenerated bone? What tool have you used for measuring the insertion torque? What is the study design and number of implants? inclusion/exclusion criteria?Thanks
Is this applied for regenerated bone? What tool have you used for measuring the insertion torque? What is the study design and number of implants? inclusion/exclusion criteria?
Thanks