Kapoor Shreya, Rana Vivek, Srivastava Nikhil, Kaushik Noopur, Kaur Navpreet
Department of Pediatric and Preventive Dentistry, Subharti Dental College and Hospital, Swami Vivekanand Subharti University, Meerut, Uttar Pradesh, India.
Int J Clin Pediatr Dent. 2025 Apr;18(4):406-411. doi: 10.5005/jp-journals-10005-3118. Epub 2025 May 19.
Space maintainers (SMs) are appliances used to preserve the arch space created by premature loss of primary teeth. Among all the SMs, conventional band and loop (CB&L) are one of the most commonly used fixed SMs with certain demerits, for example, laboratory work for fabrication and multisitting procedure. This study aimed to compare the efficacy of CB&L SMs with preformed band and loop (PB&L) and three-dimensional (3D)-printed band and loop (3DB&L) SMs in terms of survival time, gingival health, and patient or parent satisfaction.
About 60 healthy children, aged 4-7 years with grossly mutilated primary molars requiring extraction, were included in the study. Using the simple random sample selection method (lottery method), the samples were divided into three groups (20 each): group I-CB&L SM, group II-PB&L SM, and group III-3DB&L SM. An evaluation was done at the 1st, 3rd, 6th, and 9th months for survival time, gingival health, and patient or parent satisfaction. Results were statistically analyzed using the Chi-squared test and Kruskal-Wallis test under SPSS version 20.0 software.
About 85% of CB&L and 65% of 3DB&L, while only 30% of PB&L, survived until the end of the study. For gingival health, statistically nonsignificant differences were obtained at the 1st, 3rd, 6th, and 9th month intervals. In terms of patient or parent satisfaction, CB&L and 3DB&L SMs showed comparable results, followed by PB&L SMs.
Conventional and 3DB&L SMs proved to be clinically successful in terms of survival time, gingival health, and patient and parent satisfaction.
To find a better alternative for the CB&L SMs.
Kapoor S, Rana V, Srivastava N, . Efficacy of 3D-printed Space Maintainers in Comparison to Conventional and Prefabricated Space Maintainers: A Randomized Control Trial. Int J Clin Pediatr Dent 2025;18(4):406-411.
间隙保持器是用于维持乳牙早失后所形成牙弓间隙的装置。在所有间隙保持器中，传统带环丝圈式间隙保持器（CB&L）是最常用的固定间隙保持器之一，但存在一些缺点，例如需要实验室制作且需多次就诊。本研究旨在比较CB&L间隙保持器与预成带环丝圈式间隙保持器（PB&L）以及三维（3D）打印带环丝圈式间隙保持器（3DB&L）在生存时间、牙龈健康以及患者或家长满意度方面的疗效。
本研究纳入了约60名4至7岁、患有严重残损乳牙需要拔除的健康儿童。采用简单随机抽样方法（抽签法）将样本分为三组（每组20名）：第一组为CB&L间隙保持器组，第二组为PB&L间隙保持器组，第三组为3DB&L间隙保持器组。在第1、3、6和9个月对生存时间、牙龈健康以及患者或家长满意度进行评估。使用SPSS 20.0软件中的卡方检验和克鲁斯卡尔 - 沃利斯检验对结果进行统计学分析。
约85%的CB&L间隙保持器和65%的3DB&L间隙保持器存活至研究结束，而PB&L间隙保持器仅为30%。对于牙龈健康，在第1、3、6和9个月时获得的差异无统计学意义。在患者或家长满意度方面，CB&L和3DB&L间隙保持器显示出相当的结果，其次是PB&L间隙保持器。
传统间隙保持器和3DB&L间隙保持器在生存时间、牙龈健康以及患者和家长满意度方面在临床上被证明是成功的。
为CB&L间隙保持器寻找更好的替代方案。
卡普尔S，拉纳V，斯里瓦斯塔瓦N，等。3D打印间隙保持器与传统和预成间隙保持器疗效比较：一项随机对照试验。《国际临床儿科牙科学杂志》2025；18(4)：406 - 411。
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