Latar Belakang: Perawatan celah bibir dan langit-langit bertujuan untuk mengoptimalkan kualitas hidup pasien, terutama dalam menormalisasi penampilan dan meminimalkan deformitas yang dapat memengaruhi aspek fisik dan psikologis pasien. Cheiloplasty bertujuan untuk memperbaiki anatomi dan fungsi normal. Teknik Cronin merupakan metode bedah yang digunakan untuk mempertahankan simetri vermilion border. Evaluasi hasil pascabedah sangat penting untuk menilai keberhasilan prosedur ini, salah satunya menggunakan metode Americleft. Tujuan: Mengevaluasi simetri nasolabial pasca cheiloplasty menggunakan teknik Cronin pada pasien celah bibir unilateral menggunakan metode Americleft. Metode: Penilaian foto 24 pasien yang telah menjalani cheiloplasty menggunakan teknik Cronin dievaluasi dengan metode Americleft. Uji reliabilitas intra- dan inter-rater dilakukan menggunakan Intraclass Correlation Coefficient (ICC). Hasil: Uji reliabilitas intra-rater menunjukkan residen bedah mulut memiliki nilai ICC hampir sempurna (ICC = >0.90) pada semua komponen (Nasolabial Profile, Nasolabial Frontal, Vermilion Border, Basal View, Americleft Yardstick, Americleft Yardstick with Basal View). Uji reliabilitas inter-rater menunjukkan bahwa residen bedah mulut dan perawat memiliki ICC hampir sempurna (ICC >0.81). Kesimpulan: Evaluasi estetika nasolabial pasca cheiloplasty dengan teknik Cronin menggunakan metode Americleft menunjukkan hasil memuaskan dengan skor sangat baik hingga baik, menjadikannya pendekatan efektif untuk penilaian objektif.

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Background: Treatment of cleft lip and palate aims to optimize patients' quality of life, primarily by normalizing appearance and minimizing deformities that may affect patients' physical and psychological aspects. Cheiloplasty is intended to restore normal anatomy and function. The Cronin technique is a surgical method used to maintain vermilion border symmetry. Postoperative evaluation is essential to assess the success of this procedure, one of which uses the Americleft method. Objective: To evaluate nasolabial symmetry after cheiloplasty using the Cronin technique in patients with unilateral cleft lip, using the Americleft method. Methods: Evaluation of photos of 24 patients who underwent cheiloplasty using the Cronin technique was conducted with the Americleft method. Intra- and inter-rater reliability tests were performed using the Intraclass Correlation Coefficient (ICC). Result: The intra-rater reliability test showed that oral surgery residents achieved an almost perfect ICC value (ICC > 0.90) across all components (Nasolabial Profile, Nasolabial Frontal, Vermilion Border, Basal View, Americleft Yardstick, Americleft Yardstick with Basal View). The inter-rater reliability test indicated that oral surgery residents and nurses had an almost perfect ICC (ICC > 0.81). Conclusion: Nasolabial aesthetic evaluation after cheiloplasty using the Cronin technique and the Americleft method generally showed satisfactory results with very good to good scores, making it an effective approach for objective assessment.