pericoronitis of the mandibular third molar
Conditions
Interventions
the pericoronitis group:None
the impacted group:None
Sponsors
Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine
Eligibility
Sex/Gender
All
Age
18 Years to No maximum
Inclusion criteria
Inclusion criteria: 1. Inclusion criteria for the pericoronitis group: (1) Clinically diagnosed with pericoronitis of the mandibular third molar, or with a history of pericoronitis of the mandibular third molar; (2) Able to cooperate with clinical examination. 2. Inclusion criteria for the control group: (1) Clinically diagnosed with an impacted mandibular third molar; (2) Able to cooperate with clinical examination.
Exclusion criteria
Exclusion criteria: 1. Exclusion criteria for the impacted tooth group: (1) History of orthodontic treatment; (2) History of mandibular orthognathic surgery; (3) Displacement of the mandibular third molar due to missing mandibular teeth; (4) Other pathological conditions involving the mandibular third molar region. 2. Exclusion criteria for the control group: (1) History of pericoronitis of the mandibular third molar; (2) History of orthodontic treatment; (3) History of mandibular orthognathic surgery; (4) Displacement of the mandibular third molar due to missing mandibular teeth; (5) Other pathological conditions involving the mandibular third molar region.
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| the type of mandibular third molar impaction; | — |
Secondary
| Measure | Time frame |
|---|---|
| the proportion of the occlusal surface covered by soft tissue;the eruption height of the third molar; the frequency of pericoronitis episodes;the condition of adjacent teeth;distal bone resorption of the third molar;occlusal trauma from the opposing tooth;brushing frequency;smoking status; | — |
Countries
China
Contacts
Public ContactYue Hu
Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine
Outcome results
None listed