Oral Health Prev Dent. 2024 Aug 16;22:409-416. doi: 10.3290/j.ohpd.b5683229.
This study aimed to develop a systematic interdental brush set with size distribution based on the passage hole diameter (PHD), addressing existing gaps in size selection criteria for effective interdental cleaning.
In the first step, an interdental brush set that ascends stepwise according to the PHD value was envisioned. The study was divided into three phases: (i) in-vitro determination of PHD values of a currently existing assortment on the market by 13 calibrated dental professionals, (ii) in-vitro assessment of forces during insertion, and (iii) creation and evaluation of new prototypes for missing or non-matching PHD sizes. Intra- and inter-rater reliability, assessed with the intraclass correlation coefficient (ICC), as well as insertion forces and PHD sizes at all stages were reported.
In the existing range, three interdental brushes fitting the desired PHD sizes were initially identified. Mean insertion forces between 0.3 and 1.7 N were documented based on raters' PHD choices. Two additional rounds of measurements with prototypes adapted in diameter and shape were necessary, particularly for PHD values of 1.4, 2.3 and 2.6. High intra- and inter-rater reliability was observed throughout the study (ICC > 0.95), ensuring consistent evaluations. After three rounds of assessments, a prototype was successfully identified for each targeted PHD value in the systematised set, showcasing reliable sizing and insertion forces.
Using a structured approach, a comprehensive interdental brush set was developed with reliable PHD sizing and moderate insertion forces. The verification of size reliability through measurements by dentists represents a novelty in development and underlines the importance of accurate brush size selection for optimal biofilm control. Whether a systematic set based on the PHD value offers added value for clinical practice, and at what intervals, must be demonstrated in further studies.
本研究旨在基于通过孔直径（PHD）开发一种具有尺寸分布的系统牙缝刷套装，以解决有效牙缝清洁的尺寸选择标准中的现有差距。
在第一步中，设想了一种根据 PHD 值逐级上升的牙缝刷套装。该研究分为三个阶段：（i）由 13 位经过校准的牙科专业人员对市场上现有产品组合的 PHD 值进行体外测定，（ii）进行插入过程中力的体外评估，以及（iii）为缺失或不匹配的 PHD 尺寸创建和评估新原型。使用组内相关系数（ICC）评估了内部和内部评估者之间的可靠性，以及所有阶段的插入力和 PHD 尺寸。
在现有范围内，最初确定了三个符合所需 PHD 尺寸的牙缝刷。根据评估者的 PHD 选择，记录了 0.3 至 1.7 N 之间的平均插入力。需要进行两轮额外的测量，使用直径和形状适配的原型，特别是对于 PHD 值为 1.4、2.3 和 2.6 的情况。整个研究过程中观察到高内部和内部评估者之间的可靠性（ICC > 0.95），确保了一致的评估。经过三轮评估，在系统化套装中成功确定了每个目标 PHD 值的原型，展示了可靠的尺寸和插入力。
使用结构化方法，成功开发了一种具有可靠 PHD 尺寸和适度插入力的全面牙缝刷套装。通过牙医的测量验证尺寸可靠性是开发中的一个新颖之处，强调了准确选择牙刷尺寸对于最佳生物膜控制的重要性。基于 PHD 值的系统套装是否为临床实践提供了附加值，以及在什么间隔内提供，必须在进一步的研究中证明。
