Anti-depressants which are commonly used to treat anxiety pain and other disorders can weaken bone growth and may play a role in dental implant failure says a study. A team of US researchers found that the use of anti-depressants increased the odds of implant failure by four times. Each year of anti-depressant use doubled the odds of failure. While these drugs are often used to manage mood and emotions a side effect decreases the regulation of bone metabolism which is crucial to the healing process. For an implant to heal properly new bone must form around it to secure it