Sufficient keratinized mucosa is important for ensuring the long-term stability and aesthetics of dental implants.How to ef-fectively augment the soft tissue volume at sites with insufficient keratinized mucosa width(KMW)has gradually become a hot research topic for current scholars.Apically positioned flap(APF)with free gingival graft(FGG)is recognized as the approach of choice for peri-implant keratinized mucosal augmentation,but the postoperative shrinkage and its influencing factors are not completely clear.The objective of this review is to explain the significance of keratinized mucosa to peri-implant tissue health,analyze the relevant factors af-fecting postoperative contraction of free gingival grafts,and finally propose a risk factor assessment table for postoperative shrinkage of FGG,with the aim of providing clinicians with a scientific and effective strategy for peri-implant soft tissue management.

Sufficient keratinized mucosa is important for ensuring the long-term stability and aesthetics of dental implants.How to ef-fectively augment the soft tissue volume at sites with insufficient keratinized mucosa width(KMW)has gradually become a hot research topic for current scholars.Apically positioned flap(APF)with free gingival graft(FGG)is recognized as the approach of choice for peri-implant keratinized mucosal augmentation,but the postoperative shrinkage and its influencing factors are not completely clear.The objective of this review is to explain the significance of keratinized mucosa to peri-implant tissue health,analyze the relevant factors af-fecting postoperative contraction of free gingival grafts,and finally propose a risk factor assessment table for postoperative shrinkage of FGG,with the aim of providing clinicians with a scientific and effective strategy for peri-implant soft tissue management.

Peri-implantitis is one of the most common biological complications after implant restoration which is difficult to be cured. Early and correct diagnosis is of great significance for the prevention and treatment of peri-implantitis. Although there have been consensus reports to make guiding suggestions in diagnosis, the diagnostic criteria are not uniform, resulting in many confusions. This review summarizes published consensuses on the diagnosis of peri-implantitis, analyzes the diagnostic values and limitations of traditional examination methods, and summarizes the recent advances in examination methods for peri-implant soft and hard tissues, aiming to provide a reference for clinical diagnosis of peri-implantitis.

This systematic review and meta-analysis considered the results of randomized controlled clinical trials (RCTs) to evaluate the efficacy of systemic or local antibiotic therapy in peri-implantitis. Two independent authors screened publications from three electronic databases to include RCTs meeting all the inclusion and exclusion criteria. A meta-analysis was performed to evaluate the weighted mean differences in survival rate (SR) and changes in pocket probing depth (PPD), bone level (BL), and clinical attachment level (CAL). The study cohorts were defined as antibiotic and control groups with subgroups for analysis. Seven studies including 309 patients (390 implants) were considered. Within the limitations of this review, patients in the antibiotic groups exhibited significant improvements in PPD. Subgroup analysis indicated that the administration of systemic antibiotics or the use of antibiotics in non-surgical treatments did not result in a significant alteration in BL. It was established that the addition of antibiotics can ameliorate PPD and SR in the treatment of peri-implantitis, whether through surgical or non-surgical approaches, and also shows moderate performance regarding BL and CAL. Considering the lack of application of new technologies in the control group and the hardship of assessing the potential risks of antibiotics, careful clinical judgment is still necessary.
Humans ; Peri-Implantitis/drug therapy* ; Anti-Bacterial Agents/therapeutic use* ; Randomized Controlled Trials as Topic ; Treatment Outcome

Peri-implantitis is one of the most important biological complications in the field of oral implantology. Identifying the causative factors of peri-implant inflammation and osteolysis is crucial for the disease's prevention and treatment. The underlying risk factors and detailed pathogenesis of peri-implantitis remain to be elucidated. Titanium-based implants as the most widely used implant inevitably release titanium particles into the surrounding tissue. Notably, the concentration of titanium particles increases significantly at peri-implantitis sites, suggesting titanium particles as a potential risk factor for the condition. Previous studies have indicated that titanium particles can induce peripheral osteolysis and foster the development of aseptic osteoarthritis in orthopedic joint replacement. However, it remains unconfirmed whether this phenomenon also triggers inflammation and bone resorption in peri-implant tissues. This review summarizes the distribution of titanium particles around the implant, the potential roles in peri-implantitis and the prevalent prevention strategies, which expects to provide new directions for the study of the pathogenesis and treatment of peri-implantitis.
Humans ; Peri-Implantitis/pathology* ; Titanium/pharmacology* ; Dental Implants/adverse effects* ; Osteolysis/pathology* ; Inflammation/chemically induced*