Shabnam T I, Pooja V R
Department of Pediatric and Preventive Dentistry, Saveetha Dental College, Saveetha Institute of Medical and Technical Sciences, Chennai, Tamil Nadu, India.
Int J Clin Pediatr Dent. 2025 Jun;18(6):683-687. doi: 10.5005/jp-journals-10005-3151. Epub 2025 Aug 6.
Surface roughness plays a crucial role in microbial adhesion and retention on dental crowns, contributing to secondary infections and the development of periodontal diseases through bacterial plaque accumulation. In treating pulpitis of primary teeth pulpectomy, dental crowns are often used as full-coverage restorative solutions. Among the most widely utilized crowns are stainless steel and zirconia crowns. However, zirconia crowns present drawbacks, such as excessive tooth reduction and increased wear on opposing teeth, while stainless steel crowns (SSCs) pose esthetic limitations. A new alternative, Edelweiss crowns, made from laser-sintered barium and vitrified composite, is gaining attention. These crowns offer esthetic appeal, biocompatibility, reduced tooth reduction, high flexural strength, and minimal abrasivity against opposing natural teeth.
This study aimed to assess the microbial adherence and surface roughness of primary esthetic crown (Edelweiss crowns) following simulated toothbrushing.
About 10 pediatric posterior Edelweiss crowns were subjected to surface roughness analysis using a stylus profilometer. The crowns underwent 10,000 brushing cycles in a toothbrush simulator (ZM3.8 SD-Mechatronik). Surface roughness measurements were recorded before and after brushing. To evaluate microbial adhesion, the crowns were incubated with suspension, and colony-forming units (CFUs) were quantified pre- and postbrushing simulation. The data were analyzed statistically using Statistical Package for the Social Sciences (SPSS) software (version 29).
The average surface roughness (Ra) values pre- and postbrushing were 10.517 and 7.541 µm, respectively. The average CFU of on the crowns decreased from 1 × 10 CFU/mL prebrushing to 3 × 10 CFU/mL postbrushing.
Edelweiss crowns demonstrated a reduction in both surface roughness and microbial adhesion after simulated brushing, suggesting that they may help reduce the risk of gingival infections in pediatric patients while providing durable full coronal restorative outcomes.
Edelweiss crowns represent a valuable alternative to traditional crowns in pediatric dentistry in terms of surface roughness and microbial adhesion.
Shabnam TI, Pooja VR. Evaluation of Surface Roughness and Microbial Adhesion of Primary Esthetic Crowns: An Study. Int J Clin Pediatr Dent 2025;18(6):683-687.
表面粗糙度在微生物在牙冠上的黏附和留存中起着关键作用，通过细菌菌斑堆积导致继发性感染和牙周疾病的发展。在治疗乳牙牙髓炎进行牙髓摘除术后，牙冠常被用作全冠修复解决方案。使用最广泛的牙冠类型包括不锈钢冠和氧化锆冠。然而，氧化锆冠存在一些缺点，如过度磨除牙齿以及对颌牙磨损增加，而不锈钢冠（SSC）存在美观方面的局限性。一种新的替代品，即由激光烧结钡和玻璃化复合材料制成的雪绒花冠，正受到关注。这些牙冠具有美观性、生物相容性、减少牙齿磨除、高抗弯强度以及对天然对颌牙的磨损极小等优点。
本研究旨在评估模拟刷牙后乳牙美学冠（雪绒花冠）的微生物黏附和表面粗糙度。
使用触针式轮廓仪对约10个儿童后牙雪绒花冠进行表面粗糙度分析。这些牙冠在牙刷模拟器（ZM3.8 SD - Mechatronik）中进行10000次刷牙循环。记录刷牙前后的表面粗糙度测量值。为评估微生物黏附情况，将牙冠与悬浮液孵育，并在刷牙模拟前后对菌落形成单位（CFU）进行定量。使用社会科学统计软件包（SPSS）软件（版本29）对数据进行统计分析。
刷牙前和刷牙后的平均表面粗糙度（Ra）值分别为10.517和7.541 µm。牙冠上的平均CFU从刷牙前的1×10 CFU/mL降至刷牙后的3×10 CFU/mL。
雪绒花冠在模拟刷牙后表面粗糙度和微生物黏附均有所降低，这表明它们可能有助于降低儿童患者牙龈感染的风险，同时提供持久的全冠修复效果。
就表面粗糙度和微生物黏附而言，雪绒花冠是儿童牙科中传统牙冠的一种有价值的替代品。
Shabnam TI, Pooja VR. Evaluation of Surface Roughness and Microbial Adhesion of Primary Esthetic Crowns: An Study. Int J Clin Pediatr Dent 2025;18(6):683 - 687.
