الفهرس 
AcknowledgmentOnly 14 pages are availabe for public view
 |  | from | 234 |  |  |
| | | from | 234 | | |
Abstract
This study aimed to compare functional splinting time effect versus the suggested splinting time of (IADT) effect on tooth mobility and possible healing outcomes for surgically extruded permanent anterior teeth with a crown-root fracture.This study was carried out on patients attending the outpatient clinic in Pediatric and Community Dentistry Department-Faculty of Dentistry – Cairo University – Egypt .
In this current randomized controlled trial (RCT), a total of eighteen patients had eighteen upper anterior incisors with a crown-root fracture which needed surgical extrusion, which satisfied for the eligibility criteria and completed follow up period. The included patients were fifteen males & three females. Their mean age for group (A); IADT splinting time was 133.1±20.9 months and range (103-160) while in group (B); functional splinting time was 140.3±19.7 months and range (108-174). All teeth were maxillary incisors (sixteen central incisors and two lateral incisors). The design of this study was a randomized controlled trial (RCT), parallel groups with 1:1 allocation ratio and equivalence framework. Double-blinded (The patients and radiographic assessors of results were blinded to the splinting time .
Surgical extrusion was performed in this study to correct the biological width violation in cases of crown-root fracture. Splinting was done to stabilize the extruded tooth in its correct position and allow adequate periodontal ligament reattachment throughout the splinting period. Splinting time was either two weeks according to the recommendation of IADT or the splint was removed when the Periotest score reach the values of the adjacent tooth (Functional splinting time). Functional splinting time in this study ranged from four to six weeks splinting .
The results of this study showed that:
1. When comparing the overall clinical adverse effect between group (A); IADT splinting time (two weeks splinting) and group (B); functional splinting time (from four to six weeks splinting), there was no statistically significant differences between them .
2. When comparing the radiographic adverse effect between group (A); IADT splinting time (two weeks splinting) and group (B); functional splinting time (from four to six weeks splinting), there was no statistically significant differences between them .
3. There was a statistically significant difference in surgically extruded tooth mobility measured with Periotest in both horizontal and vertical values after splint removal where the median and range of the HPV were 24.1(13.3-34.3) for group A and 10.3(4.5-14.6) for group B (p= <0.001), being higher in group A while the VPV was 12.6(2.7-33.7) for group A and 4(1.2-6.8) for group B with statistically significant difference between both groups (p= 0.005 .
4. There was statistically significant differences in surgically extruded tooth mobility measured with Periotest in both horizontal and vertical values after 1 month were, the median and range of the HPV were 18.2 (9.8-22.4) for group A and 8(1.8-15.1) for group B, while the median and range of the VPV was 7.2 (2.6-31.4) for group A and 3.1(0.8-10.3) for group B with statistically significant difference between both groups (p= 0.022), being higher in group A.
1. However, after 3, 6, 9 months, there was no statistically significant difference between both groups.
2. After 9- months postoperative period, there was no statistically significant difference in mobility measured with Periotest in both directions, horizontal and vertical, between group (A); IADT splinting time (two weeks splinting) and group (B); functional splinting time (from four to six weeks splinting).