A Retrospective Study on Insertion Torque and Implant Stability Quotient (ISQ) as Stability Parameters for Immediate Loading of Implants in Fresh Extraction Sockets

• Published in: BioMed research international 2019, Vol.2019 (2019), p.1-10
• Main Authors: De Vito, Danila, Cantore, Stefania, Ballini, Andrea, Inchingolo, Francesco, Gargiulo Isacco, Ciro, Dipalma, Gianna, Grassia, Vincenzo, Paderni, Carlo, Cavataio, Alessio, Randazzo, Valentina, Bavetta, Giorgio, Bavetta, Giuseppe, Scarano, A.
• Format: Article
• Language: English
• Subjects: Adult; Aged; Arthritis; Bond strength; Bone density; Clinical Study; Complications; Decision making; Defects; Dental Implantation, Endosseous; Dental Implants, Single-Tooth; Dental prosthetics; Dentistry; Female; Females; Humans; Immediate Dental Implant Loading; Insertion; Male; Males; Methods; Middle Aged; Orthodontics; Parameters; Prostheses; Quotients; Retrospective Studies; Shear strength; Stability analysis; Statistical analysis; Surgical implants; Tooth Extraction; Tooth Socket - diagnostic imaging; Tooth Socket - surgery; Torque; Transplants & implants
• ISSN: 2314-6133; 2314-6141
• DOI: 10.1155/2019/9720419

Background. To date, insertion torque value (ITV) and implant stability quotient (ISQ) obtained by the Osstell instrument are common clinical methods to assess the initial stability of an implant for a predictable loading procedure. The aim of this current study is to evaluate the ITV and ISQ as stability parameters as part of the decision-making protocol in the adoption of immediate loading in fresh extraction sockets. Materials and Methods. A total of 41 tapered implants were allocated into two groups: the test group (n = 11; 3 males and 8 females; mean age: 62.8 ± 10.7) which received 18 implants as type 1 fresh extraction sockets after teeth removal and the control group (n = 7; 4 males and 3 females; mean age: 65.4 ± 9.7) which received 23 implants placed in healed sockets for a period of at least 3 months. Both the ITV and ISQ data were recorded at the time of insertion (t0). Since ITV (test group) and ITV/ISQ (control group) values were useful for the immediate loading protocol, a screw-retained temporary crown was immediately loaded. ISQ values were recorded after a healing period of 4 months (t1). Results. ITV mean values at t0 in test and control groups were, respectively, 48.61 ± 15.39 and 70.47 ± 14.71, whereas ISQ mean values were 57.55 ± 1.93 and 72.86 ± 5.25, respectively, showing a statistically significant difference (p value