RETRACTED: Influence of diameter and length on primary stability in various implant site densities—An in vitro study in polyurethane blocks
Why is this work in the frame?
A frame that forgets how it found something cannot be audited. These are the routes that admitted this work.
No Canadian affiliation. An affiliation-only frame — the usual design — would never have seen this work. It is one of the works that make the case for inverting the frame.
Post-publication record
OpenAlex flags this work as retracted, but it carries no matching Retraction Watch record in this frame.
Abstract
Abstract Background The influence of dental implant length and diameter on primary stability in various bone densities is not well understood. Aim To in vitro study the effect of length and diameter on resonance frequency analysis (RFA), insertion torque (IT) and displacement (DP) measurements of dental implants in different implant site densities. Materials and methods Dental implants of four different diameters (Ø 3.5, 4.0, 4.5 and 5.0 mm) and three different lengths (7, 11 and 15 mm) (Neoss Ltd, Harrogate, UK) were placed in polyurethane blocks of three different densities (Sawbones Europe AB, Malmö, Sweden). The primary stability was assessed by RFA (ISQ) (Osstell, Osstell AB, Gothenburg, Sweden) and insertion torque measurements (IT max in N cm) (iChiropo™, Bien‐Air Dental SA, Bienne, Switzerland). In addition, the blocks were mounted in a rig and a lateral force of 25 N cm was applied to the implants and the DP was measured in μm with a micrometer gauge placed on the opposite side of the load transducer. Statistical analyses using linear and quadratic models were applied. Results Implant length, diameter and block density were found to be significant independent predictors of RFA, IT max , and DP measurements. Implant length had a strong effect, while the effect of diameter in general was subtle, particularly in the softest block. Conclusions Implant length affects primary stability more than implant diameter in polyurethane blocks of uniform density along the whole length of the tested implants.
Fetched live from OpenAlex and de-inverted. Abstracts are not stored in this database: the inverted indexes are 8.6 GB of the frame’s 9.3 GB of text, and the host has 13 GB free.
The record
- Venue
- Clinical Implant Dentistry and Related Research
- Topic
- Dental Implant Techniques and Outcomes
- Field
- Dentistry
- Canadian institutions
- —
- Funders
- —
- Keywords
- PolyurethaneImplantPrimary (astronomy)DentistryIn vitroMaterials scienceBiomedical engineeringComposite materialMedicineChemistrySurgeryPhysics
- Has abstract in OpenAlex
- yes