The present pre-post quasi-experimental study assessed changes in peri-implant disease perception and oral health-related quality of life following non-surgical peri-implant therapy. Using validated psychometric tools, including the Brief Illness Perception Questionnaire (Brief-IPQ) and the Oral Health Impact Profile-14 (OHIP-14), the study evaluates patients at baseline and three months after therapy. The study builds upon prior cross-sectional findings highlighting the low perception of peri-implant diseases and aims to determine whether non-surgical treatment improves patients' psychological awareness and perceived impact of their condition.

Inclusion Criteria:

• Adults aged 18 to 80 years
• Diagnosis of peri-implant disease requiring non-surgical therapy
• Presence of at least one dental implant loaded for a minimum of one year
• History of periodontitis
• Good general health
• Ability to provide written informed consen

Exclusion Criteria:

• Pregnant or lactating individuals
• Inability to perform basic oral hygiene procedures
• Inability to understand or complete study questionnaires