Displacement of Dental Implants in Trabecular Bone under a Static Lateral Load in Fresh Bovine Bone

Abstract

Displacement of screw implants in trabecular bone can be detected and visualized using commercially available endoscopes with a high magnification. A lateral load of 20 N indicates a mean displacement of over 100 µm and therefore results in a critical displacement.

Fifteen-Year Follow-up of Short Dental Implants in the Completely Edentulous Jaw

“…8,9 Implant micromovements exceeding 150 mm may have detrimental effects on implant osseointegration and may increase the risk of early failure. [12][13][14][15] A second surgery is needed to uncover the implant and connect the implant abutment. Nonsubmerged healing is less invasive and shortens the time of implant loading and prosthesis delivery.…”

“…Primary implant stability allows for bone formation that increases the bone-to-implant contact. 12 Engelke et al 15 have concluded that an insertion torque greater than 30 Ncm is advisable to achieve adequate primary stability and a torque value #11 Ncm is considered a risk factor that increases the likelihood of implant failure.…”

“…10,11 However, it is important to avoid implant micromovements that exceed 150 mm due to the detrimental effect on implant osseointegration and the increase in the risk of early implant failure. [12][13][14][15] The high life expectancy at birth and the longevity of our patients indicate that dental implants work for an increased time. However, there is a paucity of clinical studies that have assessed the long-term prognosis of short dental implants.…”

Comparison of Opening Torque of Grooved and Non-grooved Memory Alloy Screws for Mandibular Fracture Fixation

“…Two fresh bovine mandibles were prepared due to the similarity of their density and mineral content to human bone. 26,27 To prevent dehydration, they were covered in a wet towel at a temperature of 4ºC. Then, because of appropriate density, 10 holes with a diameter of 4 mm were embedded at 2-cm intervals from each other by a 4-mm drill in the angle and ramus of one mandible under cooling with normal saline using an irrigating syringe.…”