What Are the Complications of Dental Implants?

Dental implants are a popular choice for replacing missing teeth, but what percentage of them have complications? According to research, it is estimated that about 5 to 10 percent of dental patients experience complications with their implants. A study conducted in 2019 revealed that 42 percent of patients had at least one complication. The most common type were technical issues, which were usually isolated incidents. The most important risk factor was the extent of implant-supported reconstruction. Patients who grind their teeth, known as Bruxers, have a higher failure rate due to an uncontrolled functional load on the implant.

This causes micromovements above the critical limit, resulting in fibrous encapsulation of the implant instead of osseointegration. Implant failure is defined as “implant removal”, regardless of technique or cause. Implants placed in the upper jaw can penetrate the sinuses and cause discomfort or possible infection. Early failures were due to a lack of osseointegration, while late failures were caused by bone loss from periimplantitis (2.32%, σ %3D 1.95%). The survey included patients of all ages and genders who experienced implant failure after placement, following the contraindications of the implant.

The results showed that good compliance, smoking cessation, a drilling sequence adapted to the type of bone and periodontal maintenance are essential for preventing periimplantitis and successful rehabilitation. Improper placement of the implant and tension at the implant site can cause aerobic bacteria growth, leading to infections or an abscess. Short implants are recommended as an alternative to sinus lift surgery prior to implantation. Implant micromovements can occur when a dental implant lacks stability, sometimes after immediate tooth replacement. The goal is to remove the defective implant without compromising the integrity of adjacent teeth and periodontium. The purpose of this study was to evaluate the implant failure rate observed in an oral surgery service over a 6-year period and analyze associated risk factors.

The main criterion evaluated was the overall failure rate over 6 years; secondary criteria were risk factors associated with implant failure. A better understanding of these factors will provide clinical decision-making and may improve the field of implant dentistry.

Noah Williams
Noah Williams

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