Doing the Tooth Implant Two-Step
Two-step tooth implantation and built-up bone can be longer lasting, TAU researcher discovers
Periodontists routinely grow bone in the mouth to guarantee a stable environment for teeth and tooth implants. But whether it's better to build up bone before placing the implant, or to simply place the implant and allow bone to grow around it, has been a subject of considerable medical debate.
Now Prof. Zvi Artzi of Tel Aviv University's Maurice and Gabriela Goldschleger School of Dentistry at the Sackler Faculty of Medicine has completed a study that concludes the two-step method is the more effective alternative — building bone first, then implanting and allowing further bone growth. Currently, many dental professionals prefer a one-step process to save their patients from an additional surgical procedure.
Published in the Journal of Clinical Periodontology, Prof. Artzi's study shows that a one-step implant will show more wear and tear over time than one implanted through the more cautious two-step procedure. While both are clinically effective methods, he concludes, implant placement procedures done with the one-step method show greater bone resorption around the implant neck — a process by which the bone is broken down. Bonding of the bone around the implant was also shown to be inferior.
Testing proven procedures
The successful placement of a tooth implant is based on the biocompatibility of titanium, the main component of most dental and orthopedic implants. Both animal and human tissues readily accept the implant and grow around it. But in many cases, the amount of bone is also crucial to the success of the implant. Building bone to stabilize a titanium fixture is a long-standing procedure in dentistry.
Periodontists typically choose either the one-step or two-step procedure based on their preference alone. So Prof. Artzi and his fellow researchers set out to determine which procedure was scientifically superior in the long-term, well past the time when periodontists would typically monitor a patient's progress. In their study, they compared both methods of implantation in lab animals, and followed the progress of the implants over a course of two years.
The one-step procedure is based on the idea that a bone graft will simply attract the surrounding tissue to build up bone around the titanium implant — a process called conduction. The benefit of this procedure is that patients are only subjected to one surgery. But the study shows a difference in long-term efficacy, Prof. Artzi says. Ultimately, the bone recedes less in the more cautious two-step procedure. The quality of the resulting bone itself is similar.
A judgement call
Though the study proves that the two-step method is more advantageous in most cases, each case is different, says Prof. Artzi. For example, dental professionals also take into account the already existing bone – which determines how stable a future implant will be – before deciding which route to take with each individual patient. Clinically, both methods remain sound, and periodontists should still rely on their own judgement as to what is best for the patient.
George Hunka | EurekAlert!
The most recent press releases about innovation >>>
Die letzten 5 Focus-News des innovations-reports im Überblick:
An international team of scientists has proposed a new multi-disciplinary approach in which an array of new technologies will allow us to map biodiversity and the risks that wildlife is facing at the scale of whole landscapes. The findings are published in Nature Ecology and Evolution. This international research is led by the Kunming Institute of Zoology from China, University of East Anglia, University of Leicester and the Leibniz Institute for Zoo and Wildlife Research.
Using a combination of satellite and ground data, the team proposes that it is now possible to map biodiversity with an accuracy that has not been previously...
Heatwaves in the Arctic, longer periods of vegetation in Europe, severe floods in West Africa – starting in 2021, scientists want to explore the emissions of the greenhouse gas methane with the German-French satellite MERLIN. This is made possible by a new robust laser system of the Fraunhofer Institute for Laser Technology ILT in Aachen, which achieves unprecedented measurement accuracy.
Methane is primarily the result of the decomposition of organic matter. The gas has a 25 times greater warming potential than carbon dioxide, but is not as...
Hydrogen is regarded as the energy source of the future: It is produced with solar power and can be used to generate heat and electricity in fuel cells. Empa researchers have now succeeded in decoding the movement of hydrogen ions in crystals – a key step towards more efficient energy conversion in the hydrogen industry of tomorrow.
As charge carriers, electrons and ions play the leading role in electrochemical energy storage devices and converters such as batteries and fuel cells. Proton...
Scientists from the Excellence Cluster Universe at the Ludwig-Maximilians-Universität Munich have establised "Cosmowebportal", a unique data centre for cosmological simulations located at the Leibniz Supercomputing Centre (LRZ) of the Bavarian Academy of Sciences. The complete results of a series of large hydrodynamical cosmological simulations are available, with data volumes typically exceeding several hundred terabytes. Scientists worldwide can interactively explore these complex simulations via a web interface and directly access the results.
With current telescopes, scientists can observe our Universe’s galaxies and galaxy clusters and their distribution along an invisible cosmic web. From the...
Temperature measurements possible even on the smallest scale / Molecular ruby for use in material sciences, biology, and medicine
Chemists at Johannes Gutenberg University Mainz (JGU) in cooperation with researchers of the German Federal Institute for Materials Research and Testing (BAM)...