To present the 5-year clinical, radiographic, and aesthetic outcomes in patients with congenitally missing lateral incisors (MLIs) rehabilitated with two narrow-diameter implants (NDIs).

Inclusion Criteria:

• Patients affected by congenital missing with uni- or bilateral maxillary lateral incisors (i.e. 12 and/or 22)
• Patients with systemic health or controlled medical conditions
• Patients arrested skeletal growth as documented by two body height measurements at least one year apart not indicating continuous growth (Jensen, 2019)
• Written Informed Consent

Exclusion Criteria:

• Patients contraindications to implant therapy (Hwang & Wang, 2006, 2007) including
• Heavy smoking: >20 cigarettes/day
• Poor oral hygiene
• Compromised compliance
• Periodontally compromised conditions
• Patients with MLI's with the canine situated in the MLI region

Patients affected by congenital missing with uni- or bilateral maxillary lateral incisors (i.e. 12 and/or 22)