Outcomes of a microscope‐assisted modified minimally invasive non‐surgical technique (M‐MINST) for Stage 4 periodontal disease of the maxillary fourth premolar: A case series of six dogs

Abstract Periodontal disease (PD) is common in dogs, and there is a lack of treatments that preserve the carnassial teeth. This study investigated the effects of a microscope‐assisted modified minimally invasive nonsurgical technique (M‐MINST) on attachment levels and furcation involvement in dogs with PD. Overall, six dogs with Stage 3 furcation exposure (F3) and/or Stage 4 PD (>50% bone loss on radiography) of the maxillary fourth premolar were treated with M‐MINST. The main outcome was improvement in dental health after initial treatment under anaesthesia. Dental health improved in all six dogs. In two dogs, furcation exposure improved from F3 to F0. The M‐MINST can improve PD without tooth extraction in dogs. Microscope assistance allows identification and removal of plaque and calculus without damaging the root surface. This approach avoids significant gingival recession, thereby promoting the maintenance of blood clots and enabling better healing and tissue regeneration.