[Parameter] Onset [Dentin hypersensitivity[8]:36] Gradual Variable [Pulp necrosis[8]:37] From pain of reversible pulpitis to no pain in days [Apical periodontitis[8]:37–38] Gradual, typically follows weeks of thermal pain in tooth [Periodontal abscess] Sudden, no episode of thermal sensitivity [Pericoronitis] Sudden [Myofascial pain] Very slow; weeks to months [Maxillary sinusitis] Sudden [Reversible pulpitis[8]:36] 
Variable