Presently, various methodologies are being employed to ascertain the precise working length, encompassing conventional or digital radiography, tactile menthol, and moisture with paper points. Among these, radiography and electronic methods are the prevailing choices, renowned for their accuracy in determining the working length. Aim: The objective of this study is to evaluate how the method chosen for working length determination influences the quality of obturation in primary molars. Materials and methods: Radiographic data were procured from DIAS (Dental Information Archiving Software) at Saveetha Dental College. Coll and Sadrian’s criteria were used to assess the quality of obturation. Statistical analysis was performed using SPSS software, supplemented by Pearson's chi-square test to ascertain any correlation between the method of working length determination and the quality of obturation. Results and Discussion: The study unveiled that primary molars exhibited optimal obturation levels when hand files were employed for working length determination, whereas electronic apex locators yielded a lesser rate of optimal obturation. Conclusion: This investigation underscores the superior accuracy of hand files over electronic devices in pinpointing precise measurements in primary dentitions and improved quality of obturation. The scarcity of studies elucidating the accuracy and challenges posed by electronic apex locators necessitates the undertaking of larger-scale studies to address these gaps for future applications.