7 Riverview Drive, Guelph, Ontario, N1E 3R6,
Canada
Mon: 10:00am - 7:00 pm
Tu/W: 8:00am - 5:00 pm
Thur: 9:00am - 4:00 pm
Fri - Sat 9:00 am - 3:00 pm (alternating)
Replacement of aged composite restoration with marginal leakage, staining and recurrent decay - conservatively removed and replaced with layered composite.
This patient had a diastema — a gap between the front teeth — closed with composite bonding roughly 7 to 10 years earlier, and the restoration had begun showing multiple signs of failure. There was marginal leakage, visible as dark lines forming along the edges of the filling where it had started lifting from the tooth surface, along with discolouration, chipping and recurrent decay at the base of the restoration.
Her primary goal was to replace the bonding with minimal to no tooth removal, matched to her natural teeth so the result would look natural.
The plan ran in a deliberate sequence:
1) Review the patient's goals and expectations, and the limitations of composite bonding against the alternatives — crowns, veneers or orthodontics.
2) Assess the teeth for nerve vitality, pathology and gum (periodontal) health.
3) Remove the existing composite bonding.
4) Evaluate and treat any decay found beneath the restoration. Its full extent cannot be known until the old bonding is off.
5) Restore the front teeth, balance the bite and polish.
6) Identify and address anything that contributed to the breakdown: grinding and clenching (bruxism), habits, diet, hygiene and how the bite loads the restoration.
The old composite was removed in stages with the assistance of air abrasion and limited irrigation, so the boundary between filling and tooth stayed visible throughout and minimal to no natural tooth was removed.
Decay along the cervical margin, the base of the tooth near the gumline, was then removed, and the restoration was rebuilt following the same anterior bonding protocol detailed step by step in our composite bonding case study: isolation, air abrasion and etching, then a layered build-up of body composite, tints and stains, and a polishable microfill surface layer.
The final restoration was assessed critically under several lighting conditions for form, colour and texture, with further small adjustments and a final polish completed before the patient left.
Post-operative instructions for maintaining the bonding were provided, and an upper (maxillary) night guard was made to protect the new restoration from the grinding and clenching forces that contributed to the previous bonding's breakdown.
Individual results vary; how long bonding lasts depends on your bite, your habits and how the restoration is maintained. This page documents a clinical case treated by Dr. P and is not individual dental or medical advice, please consult your dentist or physician for advice specific to you.
Sunny Dental Centre is a general dental practice. Dr. Mandip Puri, DDS, is registered with the Royal College of Dental Surgeons of Ontario as a general practitioner, not a specialist.
How long did the previous bonding last?
About 7 to 8 years before replacement — a reasonable service life for front tooth bonding. One of bonding's practical advantages is that when it does fail, it can usually be removed and replaced conservatively rather than escalating to crowns or veneers.
Was freezing (anesthesia) needed?
No anesthesia was used in this case. Removing old bonding and replacing it can often be done comfortably without freezing, though it is always available for anyone with sensitive teeth or who simply prefers it.
What causes bonding to break down?
Several factors, often in combination: dietary acid erosion at the margins, grinding and clenching, how the bite loads the restoration, stain-heavy foods and drinks, and the original bonding protocol and materials. Part of this case was identifying which of these applied, so the replacement would not fail the same way.
What materials were used?
Specific composites from Cosmedent and Tokuyama that we reserve for front teeth: a body layer for strength, stains for natural character — one of Dr. Puri's preferred techniques is placing stains beneath the surface layer — and a translucent microfill top layer. The margins are feathered, then polished with diamond pastes of successive grits, which helps the polish and stain resistance last.
What are the post-operative instructions?
The same aftercare as our other anterior bonding cases: no nail biting, cut hard fruits like apples rather than biting into them, wear the night guard, use a straw with staining drinks and rinse afterwards, avoid smoking, and use a soft-bristle brush with expanding floss.
For a step-by-step walkthrough of our anterior bonding protocol, see the composite bonding case study on the blog.
Individual results vary. This case illustrates work completed at Sunny Dental Centre and is shared with written patient consent. What is achievable in your own case depends on your teeth, your bite and your goals. Sunny Dental Centre is a general dental practice; Dr. Mandip Puri, DDS, is registered with the Royal College of Dental Surgeons of Ontario as a general practitioner, not a specialist.
Every case is different. Book a consultation and we will tell you what is realistic for your teeth.
7 Riverview Drive, Guelph, Ontario, N1E 3R6,
Canada
Mon: 10:00am - 7:00 pm
Tu/W: 8:00am - 5:00 pm
Thur: 9:00am - 4:00 pm
Fri - Sat 9:00 am - 3:00 pm (alternating)