One of the most important decisions when planning a Maryland bridge concerns the number of bonding wings. A clear trend has emerged in recent years:
Single-wing Maryland bridge (one bonding wing): The replacement tooth is attached to only one neighbouring tooth. This variant is today's modern standard. Long-term clinical studies show that single-wing Maryland bridges in the anterior region achieve survival rates of over 90% at 10 years. The reason for the superior durability lies in biomechanics: with only one bonding wing, the bridge can move minimally without creating stress in the adhesive bond.
Two-wing Maryland bridge (two bonding wings): The replacement tooth is attached to both neighbouring teeth. At first glance, this may seem more stable — yet studies actually show a higher debonding risk. The reason: the two abutment teeth move slightly differently during chewing, placing the adhesive bond on one of the wings under stress. If one wing debonds unnoticed, caries can develop beneath it.
The current scientific evidence for the anterior region clearly favours the single-wing variant. At our practice, we therefore preferentially place single-wing all-ceramic Maryland bridges — the combination of longevity, aesthetics, and maximum substance preservation.
