{"id":20966,"date":"2026-07-21T14:54:41","date_gmt":"2026-07-21T07:54:41","guid":{"rendered":"https:\/\/fkg.ugm.ac.id\/?p=20966"},"modified":"2026-07-21T14:54:43","modified_gmt":"2026-07-21T07:54:43","slug":"nanokitosan-lawan-bakteri-tersembunyi-di-balik-kawat-gigi","status":"publish","type":"post","link":"https:\/\/fkg.ugm.ac.id\/en\/nanokitosan-lawan-bakteri-tersembunyi-di-balik-kawat-gigi\/","title":{"rendered":"Nanokitosan Lawan Bakteri Tersembunyi di Balik Kawat Gigi"},"content":{"rendered":"

Bracket logam, kawat busur, dan cincin band yang menempel di gigi pasien ortodonti bukan sekadar alat perapih senyum. Bagi bakteri, seluruh komponen itu adalah surga persembunyian. Sela-sela sempit di antara bracket dan permukaan gigi menciptakan niche yang nyaris mustahil dijangkau sikat gigi biasa \u2014 dan di situlah <\/strong>Aggregatibacter actinomycetemcomitans<\/em><\/strong> berkembang biak dalam diam.<\/strong><\/p>\n\n\n\n

Bakteri ini bukan penghuni jinak. Ia dikenal sebagai salah satu patogen periodontal paling agresif, berpotensi merusak jaringan penyangga gigi bila dibiarkan tumbuh bebas dalam biofilm plak. Pertanyaannya: adakah senjata alami yang cukup ampuh untuk menghentikannya, tanpa harus bergantung sepenuhnya pada antiseptik kimia?<\/p>\n\n\n\n

Penelitian yang dilakukan Lintang Wulandari di bawah bimbingan Dr. drg. Andi Triawan, Sp.Ort. dan Dr. drg. Cendrawasih Andusyana Farmasyanti, M.Kes., Sp.Ort(K). dari Universitas Gadjah Mada mencoba menjawab pertanyaan itu. Hasilnya mengejutkan sekaligus membuka ruang diskusi yang lebih luas.<\/p>\n\n\n\n

Kitosan yang Diperkecil, Kekuatan yang Diperbesar<\/strong><\/h2>\n\n\n\n

Kitosan bukan material baru dalam dunia kesehatan. Biopolimer turunan kitin ini sudah lama dikenal memiliki sifat antibakteri, mudah terdegradasi secara biologis, dan relatif aman bagi tubuh. Namun versi konvensionalnya memiliki keterbatasan: ukuran partikelnya yang besar membuat penetrasi ke membran bakteri kurang optimal.<\/p>\n\n\n\n

Di sinilah nanokitosan mengambil peran. Dengan mereduksi ukuran partikel ke skala nanometer, luas permukaan kontak dengan bakteri meningkat drastis. Muatan positif pada permukaan nanokitosan berinteraksi langsung dengan muatan negatif membran sel bakteri, mengganggu integritasnya hingga bakteri kehilangan kemampuan bertahan hidup.<\/p>\n\n\n\n

Penelitian ini menggunakan konsentrasi nanokitosan 0,6%, satu tingkat di atas konsentrasi kitosan konvensional 0,5% yang sebelumnya telah terbukti mampu menghambat A. actinomycetemcomitans<\/em>. Bakteri uji diambil langsung dari plak gigi pasien yang sedang menjalani perawatan ortodonti cekat \u2014 bukan dari strain laboratorium steril. Pendekatan ini membuat hasil penelitian lebih dekat ke kondisi klinis nyata.<\/p>\n\n\n\n

Metode Sumuran dan Angka yang Bicara<\/strong><\/h2>\n\n\n\n

Pengujian antibakteri dilakukan dengan metode difusi sumuran: bakteri diinokulasi pada cawan petri, lalu sumuran kecil dibuat dan diisi dengan larutan uji. Zona bening yang terbentuk di sekeliling sumuran, zona hambat, menjadi ukuran seberapa efektif suatu larutan menekan pertumbuhan bakteri. Pengukuran dilakukan dengan jangka sorong berketelitian 0,01 mm.<\/p>\n\n\n\n

Tiga kelompok dibandingkan: nanokitosan 0,6% sebagai kelompok perlakuan, klorheksidin glukonat 0,2% sebagai kontrol positif, dan akuades sebagai kontrol negatif. Total 18 sampel dibagi merata di antara ketiga kelompok.<\/p>\n\n\n\n

Hasil uji Kruskal-Wallis menunjukkan nilai signifikansi 0,000, jauh di bawah ambang p<0,05. Artinya, ada perbedaan bermakna di antara ketiga kelompok. Uji lanjutan Mann-Whitney mempertegas bahwa perbedaan itu terjadi antarkelompok secara spesifik.<\/p>\n\n\n\n

“Larutan nanokitosan 0,6% mampu menghambat pertumbuhan bakteri Aggregatibacter actinomycetemcomitans dengan kekuatan daya hambat lemah.”<\/em><\/p>\n\n\n\n

Kalimat penutup kesimpulan itu terdengar sederhana, tapi menyimpan nuansa penting. Nanokitosan bekerja, ia membentuk zona hambat yang terukur. Namun kekuatannya belum setara dengan klorheksidin glukonat, standar emas antiseptik mulut yang selama ini menjadi rujukan klinis.<\/p>\n\n\n\n

Antara Harapan dan Batas yang Perlu Diuji Lebih Jauh<\/strong><\/h2>\n\n\n\n

Temuan ini menempatkan nanokitosan pada posisi yang menarik: bukan pengganti instan klorheksidin, tetapi kandidat komplementer yang layak dikembangkan. Klorheksidin memang efektif, namun penggunaan jangka panjang membawa konsekuensi: perubahan warna gigi, gangguan persepsi rasa, hingga kekhawatiran tentang resistensi mikroba.<\/p>\n\n\n\n

Nanokitosan, yang berasal dari sumber alami dan bersifat biokompatibel, menawarkan profil keamanan yang lebih menjanjikan. Bila konsentrasi atau formulasinya dioptimalkan, ada kemungkinan daya hambatnya bisa ditingkatkan ke level yang lebih klinis signifikan.<\/p>\n\n\n\n

Yang juga perlu dicatat: penelitian ini bersifat in vitro<\/em>, artinya dilakukan di luar tubuh manusia dalam kondisi laboratorium terkontrol. Kondisi rongga mulut jauh lebih kompleks: ada aliran saliva, interaksi dengan bakteri lain, variasi pH, dan faktor perilaku pasien yang semuanya memengaruhi efektivitas agen antibakteri. Langkah berikutnya, uji in vivo<\/em> pada hewan coba atau bahkan uji klinis pada manusia, akan menjadi penentu apakah potensi ini bisa benar-benar dimanfaatkan di kursi perawatan ortodonti.<\/p>\n\n\n\n

Sementara itu, bagi jutaan pasien yang kini mengenakan kawat gigi dan berjuang lebih keras menyikat gigi setiap malam, penelitian seperti ini adalah pengingat bahwa ilmu pengetahuan sedang bekerja keras di balik layar, mencari cara agar perjalanan menuju senyum rapi tidak harus meninggalkan jaringan periodontal sebagai korban.<\/p>\n\n\n\n

Penulis : Nanda Ayu , drg. Achmad Zam Zam Aghasy, M.Kes.<\/p>\n\n\n\n

Foto : Pexels<\/p>\n\n\n\n

<\/p>","protected":false},"excerpt":{"rendered":"

Bracket logam, kawat busur, dan cincin band yang menempel di gigi pasien ortodonti bukan sekadar alat perapih senyum. Bagi bakteri, seluruh komponen itu adalah surga persembunyian. Sela-sela sempit di antara bracket dan permukaan gigi menciptakan niche yang nyaris mustahil dijangkau sikat gigi biasa \u2014 dan di situlah Aggregatibacter actinomycetemcomitans berkembang biak dalam diam. Bakteri ini […]<\/p>\n","protected":false},"author":615,"featured_media":20967,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[359,136,322,318,316,317,321],"tags":[302,307,289,291,297],"class_list":["post-20966","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-artikel","category-berita-terbaru","category-sdg-12","category-sdg-17","category-sdg-3","category-sdg-4","category-sdg-9","tag-sdg-12-konsumsi-dan-produksi-yang-bertanggung-jawab","tag-sdg-17-kemitraan-untuk-mencapai-tujuan","tag-sdg-3-kesehatan-dan-kesejahteraan-yang-baik","tag-sdg-4-pendidikan-berkualitas","tag-sdg-9-industri-inovasi-dan-infrastruktur"],"gutentor_comment":0,"yoast_head":"\nNanokitosan Lawan Bakteri Tersembunyi di Balik Kawat Gigi - Fakultas Kedokteran Gigi<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/fkg.ugm.ac.id\/en\/nanokitosan-lawan-bakteri-tersembunyi-di-balik-kawat-gigi\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Nanokitosan Lawan Bakteri Tersembunyi di Balik Kawat Gigi - Fakultas Kedokteran Gigi\" \/>\n<meta property=\"og:description\" content=\"Bracket logam, kawat busur, dan cincin band yang menempel di gigi pasien ortodonti bukan sekadar alat perapih senyum. 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Bagi bakteri, seluruh komponen itu adalah surga persembunyian. Sela-sela sempit di antara bracket dan permukaan gigi menciptakan niche yang nyaris mustahil dijangkau sikat gigi biasa \u2014 dan di situlah Aggregatibacter actinomycetemcomitans berkembang biak dalam diam. 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