Cavities are the most common chronic disease in humans — more common than diabetes, asthma, or heart disease. Most adults in Gilbert need at least one filling in their lifetime, and most need several. A well-placed filling at Glisten Dental Studio lasts 7-15 years, restores chewing function, and prevents small problems from becoming large ones. Here’s what you should know before, during, and after.
What a filling actually does
A cavity (dental caries) is an area where bacteria have dissolved the tooth’s mineral structure. Once enamel is breached, the decay extends into the softer dentin beneath, which decays roughly 8x faster. Untreated, the decay reaches the pulp — the inner nerve tissue — and now you need a root canal rather than a filling. Untreated past that, the pulp dies, infection spreads to the bone, and you have an abscess.
A filling stops that progression. We remove the decayed tooth structure, clean the remaining cavity, and fill the space with a restorative material. The tooth is functional again and protected from further decay in that specific area.
Catching decay early makes a substantial difference. A small occlusal cavity caught at a routine cleaning takes 20 minutes to fill and costs $200-$300. The same cavity ignored for two years can require a crown ($900-$1,800), a root canal plus crown ($2,000-$3,000), or an extraction plus implant ($4,500-$6,500). The economics favor early intervention dramatically.
Filling materials — what’s the right choice for your tooth?
Composite resin (tooth-colored)
The material we use for almost all fillings at Glisten Dental Studio. Composite is a tooth-colored mix of resin and ceramic particles that bonds chemically to the tooth. Advantages: matches tooth color (invisible), bonds directly (preserves more tooth structure — no aggressive cavity shape needed for mechanical retention like amalgam requires), less thermal expansion than amalgam (less risk of cracking the tooth over time). Disadvantages: slightly shorter lifespan than amalgam in large posterior restorations (though the gap has narrowed with modern materials), more technique-sensitive to place properly.
Cost: $200-$450 per filling depending on surface count. Typical longevity: 7-10 years.
Amalgam (silver)
The traditional mercury-silver-tin alloy that dominated dentistry for 150 years. We no longer place amalgam at Glisten Dental Studio except in rare specific clinical situations. Advantages: very durable (15-20 year lifespan), less technique-sensitive, less expensive when it was being placed. Disadvantages: contains mercury (low but non-zero concern), silver color, requires aggressive cavity preparation for mechanical retention, thermal expansion/contraction cycles cause microcracks over years. Modern composite and ceramic materials outperform amalgam on most dimensions except raw durability.
If you have existing amalgam fillings, there’s no urgency to replace them unless they’re failing (margins breaking down, decay forming around them, cracks in the tooth beneath). Proactive amalgam removal is sometimes requested for cosmetic or mercury-concern reasons — we’re happy to discuss but don’t push it.
Ceramic inlays and onlays
For larger restorations where a direct filling isn’t structurally adequate. Custom-milled porcelain or lithium disilicate, bonded to the tooth, covers part or all of the chewing surface. Advantages: durable (10-20 years), highly aesthetic, seals well. Disadvantages: requires two visits (or in-office CAD/CAM same-day), higher cost. Cost: $900-$1,800.
Gold inlays and onlays
Rare today, but still the most durable restoration in dentistry — 30+ years is normal. Gold wears at a similar rate to natural enamel (unlike harder ceramics that can wear opposing teeth). Cost: $1,200-$2,500. Request only — we don’t default to gold. When a patient specifically wants the longest-lasting possible restoration and doesn’t mind the appearance, gold remains excellent.
What happens during a filling appointment
- Local anesthesia. Topical numbing gel followed by local anesthetic injection. 5-10 minutes until full numbness. Articaine for most situations; lidocaine for patients with specific sensitivities.
- Isolation. Rubber dam or Isodry isolation system keeps the tooth dry and accessible. Dry operating field is essential for composite bonding — moisture contamination is the single biggest cause of filling failure within the first 2 years.
- Decay removal. Slow-speed and high-speed handpieces remove carious tooth structure. Caries detection dye confirms we’ve removed all infected tissue without taking healthy tooth.
- Bonding preparation. Acid etch + bonding agent preps the tooth surface for chemical bonding to the composite.
- Placement. Composite placed in layers, each cured with a blue light for 20-40 seconds. Layering technique prevents the stress patterns that cause microleakage and eventual failure.
- Shaping and polishing. Carbide and diamond burs shape the occlusal anatomy. Polishing disks and pastes create the smooth finish that reduces plaque retention.
- Bite check. Articulating paper marks any high spots. Adjusted until the bite feels natural.
Total appointment time for a single simple filling: 30-45 minutes. Larger restorations or multiple fillings: up to 90 minutes.
What to expect afterward
Numbness wears off over 2-4 hours. Eat on the opposite side until numbness resolves (patients bite their cheek or tongue without realizing it if they eat numb — a surprisingly common cause of post-filling injury).
Cold and hot sensitivity for 1-2 weeks is normal, especially on deep fillings. Sensitivity that persists past 3-4 weeks, gets worse rather than better, or becomes spontaneous throbbing pain suggests the pulp was irritated during the procedure and may need additional treatment. Come back in — don’t assume it will work itself out.
If the bite feels off (tooth feels tall, or you’re hitting that tooth first when you close), come back for a bite adjustment. This takes 5 minutes and resolves the problem. Chewing on a high filling causes rapid inflammation of the tooth ligament and unnecessary pain.
Why fillings fail (and how to prevent it)
Most filling failures aren’t because the filling itself breaks — they’re because decay forms at the margins where the filling meets the natural tooth. Three reasons, in order of frequency:
- Inadequate home care. The area around existing fillings collects plaque faster than virgin tooth surfaces. Daily flossing and thorough brushing at the gumline are essential.
- Grinding or clenching. Cyclic forces fatigue the filling margins faster than normal chewing. Night guards extend filling lifespan substantially for patients who grind. See our night guard page.
- Thermal cycling. Ice water immediately after hot coffee. Repeated extreme temperature contrasts stress filling margins. Minor issue for most patients, significant for frequent offenders.
Cost and insurance
At Glisten Dental Studio: 1-surface composite filling $200-$300. 2-surface $275-$400. 3-surface $350-$500. Ceramic inlay or onlay $900-$1,800. Gold restoration $1,200-$2,500 (by request).
Most dental PPO plans cover composite fillings at 50-80% after deductible as a basic service. Some older plans only cover amalgam rates and leave you responsible for the composite upcharge. We verify your specific coverage before treatment and quote out-of-pocket precisely.
Call 480-331-4955 to schedule in Gilbert. Sensitive to cold, something doesn’t feel right when you bite, or a filling feels rough? Those are all reasons to come in.