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| Name | Class |
|---|---|
| Shiraz Dental School, Orthodontic Research Center | UNKNOWN |
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Different types of retainers have been used to assure the stability of orthodontic treatment. The aim of this study is clinical and radiographic comparison and evaluation of two common types of lingual fixed retainers on the health of periodontium.
The participants in this study will be examined both clinically and radiographically just after the completion of orthodontic treatment and after a 6-month-period.
The results of the study will be analyzed with Mann-whitney and independent t-test.
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| Label | Type | Description | Intervention Names |
|---|---|---|---|
| Fiber-reinforced-composite retainer | Active Comparator |
| |
| composite-wire retainer | Active Comparator |
|
| Name | Type | Description | Arm Group Labels | Other Names |
|---|---|---|---|---|
| Fiber-reinforced-composite retainer | Device | this type of retainer is placed on the lingual surface of teeth from canine to canine just before the completion of orthodontic treatment |
| Measure | Description | Time Frame |
|---|---|---|
| Measuring periodontal status through clinical examination | for each participant, the examination is carried out right after the completion of orthodontic treatment and after a 6-month-period | approximately 20 months |
| measuring PDL width in periapical radiographs | for each participant, the examination is carried out right after the completion of orthodontic treatment and after a 6-month-period | approximately 20 months |
| Measure | Description | Time Frame |
|---|---|---|
| Assessing periodontial status with Gingival Index | A gingival Index score will be assigned to each patient upon completion of orthodontic treatment and after a 6-month-period | approximately 20 months |
| assessing periodontal status using Plaque Index |
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Inclusion Criteria:
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| Name | Role | Phone | Extension | |
|---|---|---|---|---|
| Sepideh Torkan, resident | Contact | 0098 913327 1281 | sepideh.torkan@yahoo.com |
| Name | Affiliation | Role |
|---|---|---|
| Morteza Oshagh, Associate professor | Shiraz Dental School | Principal Investigator |
| Sepideh Torkan, resident | Shiraz Dental School | Principal Investigator |
| Facility | Status | City | State | ZIP | Country | Contacts |
|---|---|---|---|---|---|---|
| Shiraz Dental School | Recruiting | Shiraz | Fars | 7195615878 | Iran |
| PubMed Identifier | Type | Citation | Retractions |
|---|---|---|---|
| 25162332 | Derived | Torkan S, Oshagh M, Khojastepour L, Shahidi S, Heidari S. Clinical and radiographic comparison of the effects of two types of fixed retainers on periodontium - a randomized clinical trial. Prog Orthod. 2014 Aug 27;15(1):47. doi: 10.1186/s40510-014-0047-8. |
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| Composite-wire retainer | Device | this type of retainer is placed on the lingual surface of teeth from canine to canine just before the completion of orthodontic treatment to prevent treatment relapse |
|
A plaque Index score will be assigned to each patient upon completion of orthodontic treatment and after a 6-month-period
| approximately 20 months |
| assessing periodontal status using Calculus Index | A Calculus Index score will be assigned to each patient upon completion of orthodontic treatment and after a 6-month-period | approximately 20 months |
| assessing periodontal status using Bleeding on probing | Each patient will be examined for bleeding on probing upon completion of orthodontic treatment and after a 6-month-period | approximately 20 months |