Related Experiment Video
Updated: Feb 13, 2026
14:31
Bioelectric Analyses of an Osseointegrated Intelligent Implant Design System for Amputees
Published on: July 15, 2009
14.5K
Atemporal osseointegration: Early biomechanical stability through osseodensification
Adham M Alifarag1,2, Christopher D Lopez2,3,4,5, Rodrigo F Neiva6
1College of Medicine, SUNY Upstate Medical University, Syracuse, New York.
Summary
Osseodensification drilling significantly enhances implant stability and osseointegration compared to conventional methods. This additive technique improves bone-to-implant contact and bone area, leading to better biomechanical outcomes in low-density bone.
Area of Science:
- Orthopaedic Research
- Biomaterials Science
- Surgical Innovation
Background:
- Osseointegration, crucial for implant success, depends on factors like implant design and surgical methods.
- Conventional drilling techniques can compromise bone quality, potentially affecting implant stability.
Purpose of the Study:
- To evaluate the impact of osseodensification (OD) drilling on implant stability and osseointegration.
- To compare OD techniques (clockwise and counterclockwise) with conventional subtractive drilling in low-density bone.
Main Methods:
- Six sheep underwent osteotomy preparation in the ilia using regular (subtractive), clockwise OD (additive), and counterclockwise OD (additive) drilling.
- Trabecular metal (TM) and tapered-screw vent (TSV) implants were placed in prepared sites.
- Insertion torque, histomorphometric analysis (bone-to-implant contact, bone area fraction occupancy), and histological evaluation were performed.
Main Results:
- Implants placed in OD sites showed significantly higher insertion torque than those in regular drilled sites.
- Osseodensification resulted in significantly greater bone-to-implant contact and bone area fraction occupancy.
- Histology revealed bone remnants facilitating osteoblastic deposition and bone bridging in OD sites.
Conclusions:
- Osseodensification drilling enhances biomechanical stability and osseointegration in low-density bone.
- The additive nature of OD promotes superior bone apposition and implant-bone interface quality.
- OD offers a promising alternative to conventional drilling for improved dental and orthopaedic implant outcomes.
Related Concept Videos
03:18Nuclear Stability
23.4K
Protons and neutrons, collectively called nucleons, are packed together tightly in a nucleus. With a radius of about 10−15 meters, a nucleus is quite small compared to the radius of the entire atom, which is about 10−10 meters. Nuclei are extremely dense compared to bulk matter, averaging 1.8 × 1014 grams per cubic centimeter. If the earth’s density were equal to the average nuclear density, the earth’s radius would be only about 200 meters.
To hold positively charged protons together...
To hold positively charged protons together...
23.4K
01:53RNA Stability
35.8K
Intact DNA strands can be found in fossils, while scientists sometimes struggle to keep RNA intact under laboratory conditions. The structural variations between RNA and DNA underlie the differences in their stability and longevity. Because DNA is double-stranded, it is inherently more stable. The single-stranded structure of RNA is less stable but also more flexible and can form weak internal bonds. Additionally, most RNAs in the cell are relatively short, while DNA can be up to 250 million...
35.8K
01:28Stability
425
The time response of a linear time-invariant (LTI) system can be divided into transient and steady-state responses. The transient response represents the system's initial reaction to a change in input and diminishes to zero over time. In contrast, the steady-state response is the behavior that persists after the transient effects have faded.
The stability of an LTI system is determined by the roots of its characteristic equation, known as poles. A system is stable if it produces a bounded...
The stability of an LTI system is determined by the roots of its characteristic equation, known as poles. A system is stable if it produces a bounded...
425
01:14Stability of structures
532
In mechanical engineering, the stability of systems under various forces is critical for designing durable and efficient structures. One fundamental way to explore these concepts is by analyzing systems like two rods connected at a pivot point, O, with a torsional spring of spring constant k at the pivot point. This system is similar in appearance to a scissor jack used to change tires on a car. In this case, the arms of the linkage (equivalent to the rods in this system) are entirely vertical,...
532
01:24Pole and System Stability
1.0K
The transfer function is a fundamental concept representing the ratio of two polynomials. The numerator and denominator encapsulate the system's dynamics. The zeros and poles of this transfer function are critical in determining the system's behavior and stability.
Simple poles are unique roots of the denominator polynomial. Each simple pole corresponds to a distinct solution to the system's characteristic equation, typically resulting in exponential decay terms in the system's...
Simple poles are unique roots of the denominator polynomial. Each simple pole corresponds to a distinct solution to the system's characteristic equation, typically resulting in exponential decay terms in the system's...
1.0K
01:25Multimachine Stability
584
Multimachine stability analysis is crucial for understanding the dynamics and stability of power systems with multiple synchronous machines. The objective is to solve the swing equations for a network of M machines connected to an N-bus power system.
In analyzing the system, the nodal equations represent the relationship between bus voltages, machine voltages, and machine currents. The nodal equation is given by:
In analyzing the system, the nodal equations represent the relationship between bus voltages, machine voltages, and machine currents. The nodal equation is given by:
584