User-Centered Redesign of Dental Cheek Retractor Using Quality Function Deployment

Owen Sebastian; Rosnani Ginting; Aulia Ishak

doi:10.32734/jsti.v28i2.25288

Authors

Owen Sebastian Universitas Sumatera Utara
Rosnani Ginting Universitas Sumatera Utara
Aulia Ishak Universitas Sumatera Utara

DOI:

https://doi.org/10.32734/jsti.v28i2.25288

Keywords:

Product Design, Dental Tools, Cheek Retractor, Quality Function Deployment (QFD)

Abstract

This study aims to redesign the cheek retractor to enhance patient comfort and clinical efficiency, reducing soft-tissue trauma caused by poor fitting and material rigidity in conventional devices. A two-phase Quality Function Deployment (QFD) approach was applied involving ten dentists to identify user needs. Phase I (House of Quality) translated these needs into technical characteristics, while Phase II mapped the prioritized characteristics to critical components for design improvement. The results showed that QFD Phase I prioritized technical specifications such as product weight and mechanical strength, whereas Phase II prioritized the structural material and the width adjustment mechanism. The improved design utilizes durable PC/ABS material capable of repeated sterilization, effectively reducing tissue trauma, increasing comfort, and providing adjustable fitting for various oral anatomies. Overall, this study offers an innovative, QFD-based framework that directly links the voice of the dentist to engineering specifications to develop ergonomic and user-centered medical instruments.

Downloads

Download data is not yet available.

References

B. Kumar, A. Fernandes, and P. Sandhu, “Restricted mouth opening and its definitive management: A literature review,” Indian Journal of Dental Research, vol. 29, no. 2, p. 217, 2018, doi: 10.4103/ijdr.IJDR_544_16.

[2] H. Kihara et al., “Accuracy and practicality of intraoral scanner in dentistry: A literature review,” J Prosthodont Res, vol. 64, no. 2, pp. 109–113, Apr. 2020, doi: 10.1016/j.jpor.2019.07.010.

[3] C. Saadeh, H. Tohme, G. Lawand, N. Khoury, and C. Yared, “Effect of Utilizing Cheek Retractors on Patient Satisfaction and Trueness of Peripheral Borders in Maxillary Digital Scans for Totally Edentulous Patients: An In Vivo Study,” Int J Prosthodont, pp. 1–23, Mar. 2024, doi: 10.11607/ijp.8895.

[4] L. Sangalli et al., “Effects of remote digital monitoring on oral hygiene of orthodontic patients: a prospective study,” BMC Oral Health, vol. 21, no. 1, p. 435, Dec. 2021, doi: 10.1186/s12903-021-01793-9.

[5] T. H. A. Bahia, A. R. Idan, and K. R. Athab, “The Effect of Quality Function Deployment (QFD) in Enhancing Customer Satisfaction,” International Journal of Professional Business Review, vol. 8, no. 1, p. e01156, Jan. 2023, doi: 10.26668/businessreview/2023.v8i1.1156.

[6] D. J. Sharma, K. M. Chauhan, V. Sodani, H. H. Solanki, R. D. Shah, and V. R. Agarwal, “Comparative Evaluation of Ease of Operator and Patient Acceptability Using the Traditional Isolation System vs a New Isolation Tool (Intraoral Cheek and Lip Retractor Mouth Opener Tool),” Int J Clin Pediatr Dent, vol. 17, no. 6, pp. 637–640, Aug. 2024, doi: 10.5005/jp-journals-10005-2854.

[7] T. Z. Khattab, M. Y. Hajeer, and H. Farah, “Evaluation of the C-lingual Retractor and the Conventional Lingual Orthodontic Brackets in Terms of Speech Performance and Oral Discomfort: A Randomized Controlled Trial,” Cureus, Apr. 2022, doi: 10.7759/cureus.23752.

[8] M. Bazarado and Y. Ekawati, “DESIGNING THE ATTRIBUTES OF FOOD PRODUCTS USING QUALITY FUNCTION DEPLOYMENT ( QFD ) PHASE II,” p., 2015, [Online]. Available: https://consensus.app/papers/designing-the-attributes-of-food-products-using-quality-bazarado-ekawati/6223953668c65ee1bec6503324d81671/

[9] R. Ginting, B. Suwandira, and A. Fauzi Malik, “Determination of Technical Requirements and Priority of The Critical Part In The Quality Function Deployment Phase I and Quality Function Deployment Phase II Methods In Product Development : A Literatur Review,” IOP Conf Ser Mater Sci Eng, vol. 1003, no. 1, p. 012026, Dec. 2020, doi: 10.1088/1757-899X/1003/1/012026.

[10] R. Ginting, A. Ishak, and Widodo, “Prioritizing critical parts of crumb rubber product by using quality function deployment (QFD) phase II : Product design matrix,” IOP Conf Ser Mater Sci Eng, vol. 505, no. 1, p. 012090, May 2019, doi: 10.1088/1757-899X/505/1/012090.

[11] H. Hong, S. Hahn, H. Kim, and Y. Choi, “Nomogram for sample size calculation in assessing validity of a new method based on a regression line,” Commun Stat Theory Methods, vol. 52, no. 16, pp. 5900–5909, Aug. 2023, doi: 10.1080/03610926.2021.2023182.

[12] P. Athanasiadou, A. Arhakis, D. Balli, A. E. Zarkadi, K. Arapostathis, and V. Boka, “The impact of radiographic examination timing and gag reflex on dental fear and cooperation in children: a comparative clinical study,” European Archives of Paediatric Dentistry, vol. 26, no. 2, pp. 375–383, Apr. 2025, doi: 10.1007/s40368-024-00993-5.

[13] B. Gucyetmez Topal, S. B. Falay Civelek, M. Tiras, and T. Yigit, “The prevalence and influencing factors of gag reflex in children aged 7–14 years in the dental setting,” J Oral Rehabil, vol. 50, no. 5, pp. 376–382, May 2023, doi: 10.1111/joor.13432.

[14] Cohen L, “Quality_Function_Deployment,” 2007.

[15] Y. Akao, Quality Function Deployment. New York: Productivity Press, 1995. doi: 10.4324/9781003578833.

[16] Y. Akao, Quality Function Deployment. New York: Productivity Press, 2024. doi: 10.4324/9781003578833.

[17] J. Hauser and D. Clausing, “House_of_Quality,” 1988.

[18] R. Dou, W. Li, and G. Nan, “An integrated approach for dynamic customer requirement identification for product development,” Enterp Inf Syst, vol. 13, no. 4, pp. 448–466, Apr. 2019, doi: 10.1080/17517575.2018.1526321.

[19] G. S. WASSERMAN, “ON HOW TO PRIORITIZE DESIGN REQUIREMENTS DURING THE QFD PLANNING PROCESS,” IIE Transactions, vol. 25, no. 3, pp. 59–65, May 1993, doi: 10.1080/07408179308964291.

[20] C. Fajri and Sutrisno, “Perancangan Shelter Bus Mebidang Dengan Menggunakan Quality Function Deployment (QFD),” Jurnal Sistem Teknik Industri, vol. 22, no. 1, pp. 77–89, Jan. 2020, doi: 10.32734/jsti.v22i1.3630.

[21] M. Muhammad and M. Fadilla, “PERANCANGAN DESAIN PRODUK ALAT TULIS KANTOR DENGAN MENGGUNAKAN METODE QUALITY FUNCTION DEPLOYMENT,” Jurnal Sistem Teknik Industri, vol. 20, no. 1, pp. 10–13, Aug. 2018, doi: 10.32734/jsti.v20i1.378.

[22] R. K. Singh, C. C. Elrod, and E. A. Cudney, “Comparative Analysis of Quality Function Deployment Methodologies: A Case Study Analysis,” Quality Management Journal, vol. 19, no. 1, pp. 7–23, Jan. 2012, doi: 10.1080/10686967.2012.11918524.

[23] C. Plowman, “1 Tailoring Quality Function Deployment for Use in Systems Engineering,” INCOSE International Symposium, vol. 9, no. 1, pp. 820–827, Jun. 1999, doi: 10.1002/j.2334-5837.1999.tb00244.x.

[24] Y. Zhang, “Green QFD-II: A life cycle approach for environmentally conscious manufacturing by integrating LCA and LCC into QFD matrices,” Int J Prod Res, vol. 37, no. 5, pp. 1075–1091, Mar. 1999, doi: 10.1080/002075499191418.

[25] J. Huang, L.-X. Mao, H.-C. Liu, and M. Song, “Quality function deployment improvement: A bibliometric analysis and literature review,” Qual Quant, vol. 56, no. 3, pp. 1347–1366, Jun. 2022, doi: 10.1007/s11135-021-01179-7.

[26] K. Noda, Y. Nakamura, T. Oikawa, S. Shimpo, K. Kogure, and A. Hirashita, “A new idea and method of tooth movement using a ratchet bracket,” The European Journal of Orthodontics, vol. 29, no. 3, pp. 225–231, Jun. 2007, doi: 10.1093/ejo/cjm002.