Sonendo GentleWave™ System for Treatment in Molar Teeth Requiring Root Canal Therapy

Number of Participants With a PAI Score of < 3, = 3, or = 4 or 5

The periapical index: A scoring system for radiographic assessment of apical periodontitis. Score of 1: Normal. Score of 2: Small changes in bone structure. Score of 3: Changes in bone structure with some mineral loss (bone loss). Score of 4: Periodontitis with well-defined radiolucent area (apical periodontitis). Score of 5: Severe Periodontitis with exacerbating features (apical periodontitis). Healed is defined by absence of a radiographic indication of apical periodontitis (PAI \<3) and absence of clinical signs and symptoms other than tenderness to percussion. Healing is defined by a reduction of radiolucency (if radiolucency is present at Baseline) combined with the absence of clinical signs and symptoms other than tenderness to percussion.

Time frame: 12 months

Periradicular Diagnosis

Symptomatic Apical Periodontitis: Inflammation, with clinical symptoms. Asymptomatic Apical Periodontitis: Inflammation with apical radiolucent area, does not produce clinical symptoms. Acute Apical Abscess: Inflammation characterized by rapid onset of clinical symptoms and swelling. Chronic Apical Abscess: Inflammation characterized by gradual onset, little or no discomfort, presence of a sinus tract. Condensing Osteitis: Diffuse radiopaque lesion representing a localized bony reaction to inflammation. Healed is defined by absence of a radiographic indication of apical periodontitis (PAI \<3) and absence of clinical signs and symptoms other than tenderness to percussion. Healing is defined by a reduction of radiolucency (if radiolucency is present at Baseline) combined with the absence of clinical signs and symptoms other than tenderness to percussion.

Time frame: 12 months