the Objective of This Research is to Compare the Clinical Effectiveness of the Conventional Lingual Arch Space Maintainers With Three-dimensional Printed Space Maintainers.
Conventional spacemaintainer: Two bands will be selected and checked for fit and adaptation around the distal abutment teeth, then an alginate impression will be taken and will be sent to the laboratory for fabrication
3D printed spacemaintainer: An intraoral scan for the patients' lower arch will be taken using a 3D digital dental scanner.
Study summary
the objective of this research is to compare the clinical effectiveness of the conventional lingual arch space maintainers with three-dimensional printed space maintainers.
Eligibility
Sex
ALL
Min age
7 Years
Max age
9 Years
Healthy volunteers
No
Inclusion Criteria:
* Apparently, healthy cooperative children have recently prematurely loss of more than one mandibular primary molar in any of the quadrants, full erupted mandibular first permanent molars in both sides, and whose lower permanent incisors have erupted
* The permanent successors of the lost primary molars were not expected to erupt within 6 months
* Angle's class 1 occlusion with normal primary molar relation
* Caries-free and periodontally healthy abutment teeth
* Absence of parafunctional habits or abnormal occlusion conditions such as crossbite, open bite, or deep bite.
* Children's age ranges from 7 to 9 years-old
* Radiographically, presence of permanent successors, more than one millimeter of bone covering the successor tooth germ, and/or only about one-third of the root of the permanent tooth has been formed.
* Parents and children were accepting the new treatment modality.
Exclusion Criteria:
* children exhibited poor oral hygiene, para-functional oral habits, severe crowding, space loss, and abnormal occlusion
* Extraction of primary molars exceeding three months.
* Radiographically, absence of permanent successor.
* uncooperative children
Primary outcome measure(s)
Patient satisfaction and pain experienced using the Wong-Baker Faces Test — 9 months Patient satisfaction and pain experienced during conventional and digital impression and cementation will be evaluated using the Wong-Baker Faces test and subsequently recorded for clinical satisfaction at 3 months, 6 months and 9 months for both patient groups to evaluate appliance acceptance and convenience for the patients.
Gingival health will be evaluated using Sillness and Loe Gingival Index — 9 months gingival health will be evaluated by Sillness and Loe Gingival Index
Evaluation of the gingival health according to the (GI) described by (Loe and Silness, 1963):
Score Criteria for the Gingival Index 0 No inflammation.
1. Mild inflammation: slight redness, slight edema, no bleeding on probing.
2. Moderate inflammation: redness, edema, glazing, bleeding on probing.
3. Severe inflammation: marked redness and edema, ulceration, and a tendency of spontaneous bleeding.
This page summarises publicly available registry data for informational purposes — not medical advice. Eligibility is determined by each study team; patients should discuss participation with their clinician.
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