Related Experiment Video
Updated: Feb 3, 2026
07:01
Head Implants for the Neuroimaging of Awake, Head-Fixed Rats
Published on: September 7, 2022
2.9K
Marginal bone loss around cement and screw-retained fixed implant prosthesis
Muhammad-Hasan Hameed1, Farhan-Raza Khan2, Robia Ghafoor2
1Resident, Department of Dentistry, Aga Khan University Hospital, Karachi, Pakistan.
Journal of Clinical and Experimental Dentistry
|November 3, 2018
Summary
Screw-retained dental implants in male patients over 65 with bone grafts showed greater marginal bone loss (MBL). This highlights key predictors for implant restoration success and potential complications.
Area of Science:
- Dentistry
- Oral Surgery
- Biomaterials
Background:
- Implant-supported fixed restorations are standard for missing teeth, available as screw or cement-retained options.
- Marginal bone loss (MBL) is a critical factor determining the success or failure of implant restorations.
Purpose of the Study:
- To compare MBL around cement-retained versus screw-retained implant prosthesis.
- To identify predictors associated with MBL in implant restorations.
Main Methods:
- A retrospective chart review of 104 implant restorations assessed via periapical radiographs.
- MBL was measured at baseline and 12 months, with statistical analysis using SPSS and Generalized Estimation Equation (GEE).
Main Results:
- Screw-retained prosthesis exhibited significantly greater MBL than cement-retained prosthesis (p=0.018).
- Significant predictors of MBL included male gender (p<0.01), age over 65 (p=0.028), and bone-grafted sites (p=0.003).
Conclusions:
- Male patients over 65 with bone grafts receiving screw-retained prosthesis experienced significantly higher MBL.
- Findings emphasize the importance of considering patient demographics and surgical factors in predicting MBL for implant success.
More Related Videos
10:00Techniques for Processing Eyes Implanted with a Retinal Prosthesis for Localized Histopathological Analysis: Part 2 Epiretinal Implants with Retinal Tacks
Published on: February 14, 2015
12.7K
08:42The DREAM Implant: A Lightweight, Modular, and Cost-Effective Implant System for Chronic Electrophysiology in Head-Fixed and Freely Behaving Mice
Published on: July 26, 2024
1.8K
Related Concept Videos
01:24Hydration of Cement
921
Hydration of cement is a chemical reaction between cement particles and water. This process occurs primarily through two mechanisms: through-solution and topochemical. In the through-solution process, anhydrous compounds dissolve into their constituents, hydrates form in the solution, and then precipitate from the supersaturated solution. The topochemical process involves solid-state reactions at the cement particle surface. The through-solution process dominates the topochemical process at the...
921
01:17Soundness of Cement
569
The soundness of cement refers to the ability of cement paste to retain its volume after setting. Unsound cement can lead to expansion and structural damage due to the presence of free lime, magnesia, and calcium sulfate. Free lime hydrates very slowly, expanding and causing unsoundness, which is difficult to detect because it intercrystallizes with other compounds. Magnesia also reacts with water, forming crystals that can disrupt the cement's structure. Calcium sulfate can create...
569
01:21Screw: Problem Solving
701
In mechanical engineering, the interaction between a threaded screw shaft and a plate gear involves analyzing the resisting torque on the plate gear that can be overpowered when a specific torsional moment is applied to the shaft. To better comprehend this concept, consider a generic situation with a threaded screw shaft with a given mean radius and lead and a plate gear with a specified mean radius. The coefficient of static friction between the screw and gear is also provided.
To evaluate the...
To evaluate the...
701
01:16Self-Locking Screw
2.5K
A square-threaded screw jack is a mechanical device widely used for lifting heavy loads or applying considerable force. One of the key features that can make a screw jack more effective and reliable is its self-locking capability.
A square-threaded screw jack carrying a load is considered self-locking if the screw retains its position even after the moment applied to it is removed.
A square-threaded screw jack carrying a load is considered self-locking if the screw retains its position even after the moment applied to it is removed.
2.5K
01:10Line Loss
543
The different configurations of source-load connections include wye (star) and delta connections. The relationship between line and phase voltages and currents varies depending on the configuration. When the source is supplying power, it is transmitted through the wires to the load, and during this transmission, some power is absorbed by the wires, leading to line loss.
Line loss impacts power delivery efficiency in a balanced three-phase circuit. The symmetry in such a circuit simplifies the...
Line loss impacts power delivery efficiency in a balanced three-phase circuit. The symmetry in such a circuit simplifies the...
543
01:27Margin of Error
7.6K
The margin of error is also called the maximum error of an estimate. The margin of error is the maximum possible or expected difference between the observed sample parameter value and the actual population parameter value. For proportion, it is the maximum difference between the value of sample proportion obtained from the data and the true value of population proportion. As the true value of the population parameter is not known, the margin of error is calculated using the sample statistic.
7.6K