Digital vs Conventional VFR in Post-Orthodontic Retention
Comparison of Periodontal Health Parameters Using Conventional Versus Digital Vacuum Formed Retainer (VFR).
This study is comparing two ways of making a retainer, the clear, removable kind worn after braces to see whether the way it's made affects gum health. One type is made using a digital scan of the teeth, and the other is made the traditional way, using a plaster mold. The study will look at how each type affects plaque buildup, gum swelling, and the depth of the space between the tooth and gum over a six-month period.
About 52 people who have just finished braces on both their upper and lower teeth will take part. Participants will be assigned to one of two groups: one group will receive a digitally made retainer, and the other will receive a traditionally made retainer.
Retainer Fitting Before the study begins, each participant's retainer is custom-made for their teeth, either from a digital scan or a plaster mold, depending on which group they're in. Participants will wear their retainer for 22 hours a day, taking it out only to eat and brush their teeth.
Daily Care Throughout the study, participants will follow the same tooth-brushing and gum-care routine, so that any differences seen between the two groups can be linked to the retainer itself rather than to differences in oral hygiene. Participants will be asked to avoid using mouthwash while wearing the retainer.
Check-Up Visits
Participants will attend four check-ups over six months:
Before the retainer is placed (baseline) One month after placement Three months after placement Six months after placement
At each visit, a dentist will check the teeth and gums for plaque buildup, gum swelling or bleeding, and pocket depth (the space between the tooth and gum) using a small measuring tool called a probe.
Follow-Up The final check-up at six months marks the end of the study for each participant. Participants can leave the study at any time if they choose.
연구 개요
상태
상세 설명
Orthodontic retention is essential to prevent relapse following active orthodontic treatment, and vacuum-formed retainers (VFRs) are widely used due to their aesthetics and ease of fabrication.
Conventional VFRs are fabricated over a plaster model derived from alginate impressions, while digital VFRs are fabricated over a 3D-printed model generated from an intraoral scan.
This randomized clinical trial compares periodontal health outcomes; Plaque Index, Gingival Index, and Periodontal Pocket Depth, between the two fabrication methods.
Fifty-two participants (26 per arm) aged 15-30 years who have completed non-extraction fixed orthodontic treatment on both arches within the last month will be enrolled via non-probability consecutive sampling. Group A will receive digitally fabricated VFRs; Group B will receive conventionally fabricated VFRs, both made of 1.5 mm PETG material. Participants will wear retainers 22 hours daily and follow standardized oral hygiene instructions.
Periodontal parameters will be assessed on index teeth 16, 21, 31, and 46 at baseline (T0) and at 1, 3, and 6 months (T1-T3) post-placement. Gingival Index will follow the Loe and Silness method; Plaque Index will follow the Silness and Loe method; pocket depth will be measured with a UNC-15 probe at six sites per tooth.
Data will be analyzed in SPSS v27 using independent-sample t-tests/Mann-Whitney U tests for between-group comparisons and paired t-tests for within-group change from baseline, with stratification for age and gender as effect modifiers.
연구 유형
등록 (추정된)
단계
- 해당 없음
연락처 및 위치
연구 연락처
- 이름: Dr Syed Riaz Hashim Principal Investigator
- 전화번호: +92 3312763463
- 이메일: syed.hashim@zu.edu.pk
참여기준
자격 기준
공부할 수 있는 나이
- 어린이
- 성인
건강한 자원 봉사자를 받아들입니다
설명
INCLUSION CRITERIA
- Patients aged 15-30 years
- Patients with good oral and general health
- Patients in which both the arches were treated with fixed orthodontic treatment on a non-extraction basis completed within the last 1 month
- Patients with minimum 24 permanent teeth present
EXCLUSION CRITERIA
- Patients that are medically compromised due to a systemic disease
- Patients having periodontal disease before debonding
- Patients with severe and uncontrolled caries
- Patients having cleft palate or any other severe facial deformity
- Patients using drugs that have direct or indirect effect on the periodontal health such as phenytoin, cyclosporine etc.
- Patients that have a habit of chronic smoking
- Pregnant patients
공부 계획
연구는 어떻게 설계됩니까?
디자인 세부사항
- 주 목적: 다른
- 할당: 무작위
- 중재 모델: 병렬 할당
- 마스킹: 없음(오픈 라벨)
무기와 개입
참가자 그룹 / 팔 |
개입 / 치료 |
|---|---|
|
실험적: Group A - Digital VFR
Participants receive a vacuum-formed retainer thermoformed over a 3D-printed model generated from intraoral scanning, worn 22 hours/day for 6 months.
|
PETG, 1.5 mm, fabricated via intraoral scan and 3D-printed model
|
|
활성 비교기: Group B - Conventional VFR
Participants receive a vacuum-formed retainer thermoformed over a plaster model generated from alginate impressions, worn 22 hours/day for 6 months.
|
PETG, 1.5 mm, fabricated via alginate impression and plaster model
|
연구는 무엇을 측정합니까?
주요 결과 측정
결과 측정 |
측정값 설명 |
기간 |
|---|---|---|
|
Plaque Index
기간: Baseline (T0), 1 month (T1), 3 months (T2), 6 months (T3).
|
(Silness and Loe method) 4-point scale (0-3) scored on four surfaces (facial, lingual, mesial, distal) of index teeth 16, 21, 31, 46
|
Baseline (T0), 1 month (T1), 3 months (T2), 6 months (T3).
|
|
Gingival Index
기간: Baseline (T0), 1 month (T1), 3 months (T2), 6 months (T3).
|
(Loe and Silness method) 4-point scale (0-3) assessing inflammation and bleeding on four surfaces of index teeth 16, 21, 31, 46
|
Baseline (T0), 1 month (T1), 3 months (T2), 6 months (T3).
|
|
Periodontal Pocket Depth
기간: Baseline (T0), 1 month (T1), 3 months (T2), 6 months (T3)
|
measured in mm with a UNC-15 probe at six sites per index tooth (mesiofacial, midfacial, distofacial, mesiolingual, midlingual, distolingual); deepest site recorded
|
Baseline (T0), 1 month (T1), 3 months (T2), 6 months (T3)
|
공동 작업자 및 조사자
연구 기록 날짜
연구 주요 날짜
연구 시작 (추정된)
기본 완료 (추정된)
연구 완료 (추정된)
연구 등록 날짜
최초 제출
QC 기준을 충족하는 최초 제출
처음 게시됨 (실제)
연구 기록 업데이트
마지막 업데이트 게시됨 (실제)
QC 기준을 충족하는 마지막 업데이트 제출
마지막으로 확인됨
추가 정보
이 연구와 관련된 용어
기타 연구 ID 번호
- ZU-ORTHO-VFR-2026-001
개별 참가자 데이터(IPD) 계획
개별 참가자 데이터(IPD)를 공유할 계획입니까?
약물 및 장치 정보, 연구 문서
미국 FDA 규제 의약품 연구
미국 FDA 규제 기기 제품 연구
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