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This study aimed to investigate the skeletal, dentoalveolar, and periodontal changes of tooth-bone-borne (TBB) and bone-borne (BB) appliances with identical miniscrew placement using cone-beam computed tomography (CBCT) in the post-pubertal growth spurt stage.
Eighteen patients were divided into 2 groups: TBB group (n = 9, 16.11 ± 0.59 years of age) and BB group (n = 9, 15.33 ± 1.22 years of age). CBCT scans were obtained before treatment and after 3 months of expansion. Transverse skeletal and dental expansion, alveolar and tooth inclination, and buccal alveolar bone thickness were evaluated in maxillary first premolars and molars. Paired t tests and independent-sample t tests were used to compare the expansion appliances.
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| Label | Type | Description | Intervention Names |
|---|---|---|---|
| tooth-bone-borne (TBB) group | Other | The TBB appliance was composed of a central expansion jackscrew (Dentarum), 4 tubes, 2 bands on the upper first molars to facilitate placement of the appliance, and 1.5-mm diameter stainless steel arms extending to the premolar teeth. Soldered stainless steel tubes (internal diameter: 2.0 mm; external diameter: 3.0 mm; length: 2.0 mm) served as guides for miniscrew placement. The size of the screws (PSM) was chosen as 1.8 mm in diameter and 11 mm in length, considering the 2 mm height of the tubes, 1 to 2 mm gap between the appliance and the palate surface, 1 to 2 mm gingiva thickness, and 5 to 6 mm length required for the bicortical placement of the screw in the bone. |
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| bone-borne (BB) group | Other | The BB appliance was composed of a central expansion jackscrew, 4 tubes as described in TBB group, and less acrylic used around it to adjust its position. In order to carry it to the mouth after preparation on the cast model, essix was used, which also included the patient's teeth |
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| Name | Type | Description | Arm Group Labels | Other Names |
|---|---|---|---|---|
| skeletal anchorage and rapid palatal expansion | Device | Eighteen patients were randomly divided into 2 groups through a free randomization program (Random Allocation Software 2.0). Baseline demographic characteristics were matched in both groups. All appliances were fabricated by the same technician in the orthodontic lab. All individuals were treated by a single practitioner. |
| Measure | Description | Time Frame |
|---|---|---|
| Nasal Changes | Nasal Width:Distance between right and left inner lateral limits of nasal cavity, parallel to the base of the nasal cavity, Nasal Floor Width :Width at widest portion of floor of the nose | up to 1 year |
| Measure | Description | Time Frame |
|---|---|---|
| Maxillary Skeletal Changes | Maxillary width:Maxillary width tangent to nasal base at tooth level ,palatinal maxillary width:The distance between the inner cortical points of the palatinal bone | up to 1 year |
| Dentoalveolar Changes |
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Inclusion Criteria:
Exclusion Criteria:
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| Name | Affiliation | Role |
|---|---|---|
| Ahmet YAGCI, PROFESSOR | Erciyes University faculty of dentistry | Study Director |
| Facility | Status | City | State | ZIP | Country | Contacts |
|---|---|---|---|---|---|---|
| Erciyes University Faculty of Dentistry ,Department of Orthodontics | Kayseri | Kayseri̇ | 38000 | Turkey (Türkiye) | ||
| PubMed Identifier | Type | Citation | Retractions |
|---|---|---|---|
| 15782523 | Background | Lagravere MO, Major PW, Flores-Mir C. Skeletal and dental changes with fixed slow maxillary expansion treatment: a systematic review. J Am Dent Assoc. 2005 Feb;136(2):194-9. doi: 10.14219/jada.archive.2005.0141. | |
| 27131254 | Background | Carlson C, Sung J, McComb RW, Machado AW, Moon W. Microimplant-assisted rapid palatal expansion appliance to orthopedically correct transverse maxillary deficiency in an adult. Am J Orthod Dentofacial Orthop. 2016 May;149(5):716-28. doi: 10.1016/j.ajodo.2015.04.043. |
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Eighteen patients were divided into 2 groups: TBB group (n = 9, 16.11 ± 0.59 years of age) and BB group (n = 9, 15.33 ± 1.22 years of age). CBCT scans were obtained before treatment and after 3 months of expansion. Transverse skeletal and dental expansion, alveolar and tooth inclination, and buccal alveolar bone thickness were evaluated in maxillary first premolars and molars. Paired t tests and independent-sample t tests were used to compare the expansion appliances.
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The palatal alveolar angle (PAA) is the angle between the lines created by drawing tangents to the right and left palatal alveolar plates
| up to 1 year |
| Erciyes University Faculty of Dentistry ,Department of Orthodontics |
| Kayseri |
| Kayseri̇ |
| 38039 |
| Turkey (Türkiye) |
| Erciyes University Faculty of Dentistry, Department of Orthodontics | Kayseri | 38039 | Turkey (Türkiye) |
| 20685540 | Background | Lee KJ, Park YC, Park JY, Hwang WS. Miniscrew-assisted nonsurgical palatal expansion before orthognathic surgery for a patient with severe mandibular prognathism. Am J Orthod Dentofacial Orthop. 2010 Jun;137(6):830-9. doi: 10.1016/j.ajodo.2007.10.065. |