53/100
Ranked #1 because of services and access: 17 of 17 services offered, open 7 days a week.
- Hours
- Mon–Sun 9 AM–5 PM
General dentistryCleaningEmergency careRoot canalExtractionWisdom teethImplantsInvisalign+9 more
Dentists Open Saturday & Sunday in O'Fallon, MO (2026)
5 clinics ranked by DR ScoreUpdated 0 paid placements in this rankingHow we rank →
The short answer
- 1
Top DR Score among weekend and evening dentists: Dentist O'Fallon, DR Score 53, open 7 days a week.
- 2
Best for Saturdays: Jeffrey J. Harris, DDS, DR Score 47, open Saturdays until 1 PM.
- 5
Best for evenings: Dr. David King, DR Score 37, open evenings until 7 PM and Saturdays until 2 PM.
Rankings can't be bought. Booking through us earns you a $60 gift card and doesn’t affect order. How we rank
5 of O'Fallon’s 55 clinics open Saturdays, Sundays or after 6pm, as of October 2026. 5 open on Saturdays, 1 on Sundays and 1 after 6pm. 1 are open 7 days a week.
Top 5 weekend and evening dentists in O'Fallon at a glance
| Rank | Clinic | DR Score | Evenings / weekends | Best for |
|---|---|---|---|---|
| 1 | Dentist O'Fallon | 53 | Sat · Sun | Top DR Score among weekend and evening dentists |
| 2 | Jeffrey J. Harris, DDS | 47 | Sat | Best for Saturdays |
| 3 | O'Fallon Modern Dentistry | 47 | Sat | — |
| 4 | Confident Smiles and Implants - O'Fallon | 47 | Sat | — |
| 5 | Dr. David King | 37 | Evenings · Sat | Best for evenings |
Saturday, Sunday and evening hours in O'Fallon
Posted weekly hours for the highest-ranked clinics open on weekends or after 6pm.
- Call (636) 452-5656
- Call (636) 300-4380
Mon–Tue 7 AM–5 PM · Wed 7 AM–6 PM · Thu–Fri 7 AM–5 PM · Sat 8 AM–1 PM · Sun closed
Saturday
- Call (636) 379-7552
Mon 8 AM–4 PM · Tue 8 AM–5 PM · Wed 8 AM–4 PM · Thu 8 AM–6 PM · Fri 8 AM–1 PM · Sat 8 AM–2 PM · Sun closed
Saturday
- Call (636) 978-9978
Confident Smiles and Implants - O'Fallon#4
Mon closed · Tue–Thu 8:30 AM–5 PM · Fri–Sat 8:30 AM–12 PM · Sun closed
Saturday
- Call (636) 379-7552
Mon 10 AM–7 PM · Tue 9 AM–5 PM · Wed 8 AM–5 PM · Thu 10 AM–7 PM · Fri 7 AM–2 PM · Sat 8 AM–2 PM · Sun closed
Evenings · Saturday
The 5 weekend and evening dentists in O'Fallon, ranked
Ordered by DR Score, a 0–100 score from 6 published factors. Scores refresh weekly.
Scores below: based on access, services and profile completeness; Google ratings not yet collected. Hatched segments mark factors we don't have yet.
#2 Jeffrey J. Harris, DDS
1630 Market Center Blvd Suite 100, O'Fallon, MO 63368, United States
47/100Ranked #2 because of services and access: 17 of 17 services offered, open Saturdays until 1 PM.
- Hours
- Mon–Tue 7 AM–5 PM · Wed 7 AM–6 PM · Thu–Fri 7 AM–5 PM · Sat 8 AM–1 PM · Sun closed
General dentistryCleaningEmergency careRoot canalExtractionWisdom teethImplantsInvisalign+9 more
#3 O'Fallon Modern Dentistry
3009 State Hwy K, O'Fallon, MO 63368
47/100Ranked #3 because of services and access: 17 of 17 services offered, open Saturdays until 2 PM.
- Hours
- Mon 8 AM–4 PM · Tue 8 AM–5 PM · Wed 8 AM–4 PM · Thu 8 AM–6 PM · Fri 8 AM–1 PM · Sat 8 AM–2 PM · Sun closed
General dentistryCleaningEmergency careRoot canalExtractionWisdom teethImplantsInvisalign+9 more
In their words
As a Smile Generation Trusted office, we welcome you to O'Fallon Modern Dentistry! With state-of-the-art infection control procedures in place, our #1 goal is to keep you and your family safe. We provide comprehensive specialty services with advanced, proven technology and offer customized financial solutions for you. We are proud to be your complete O'Fallon dental provider with services including Teledentistry, Same-Day Dental Crowns, Boost Whitening, Oral Surgery, Wisdom…
From O'Fallon Modern Dentistry's own description. Not part of the ranking.#4 Confident Smiles and Implants - O'Fallon
2683 State Hwy K, O'Fallon, MO 63368
47/100Ranked #4 because of services and access: 17 of 17 services offered, open Saturdays until 12 PM.
- Hours
- Mon closed · Tue–Thu 8:30 AM–5 PM · Fri–Sat 8:30 AM–12 PM · Sun closed
General dentistryCleaningEmergency careRoot canalExtractionWisdom teethImplantsInvisalign+9 more
In their words
Confident Smiles and Implants is proud to offer professional dental care in O’Fallon, Missouri. We understand that a trip to the dentist can be overwhelming, if not downright stressful, sometimes. This is precisely why we strive to provide quality care and service for our patients by making your dental visits as comfortable as possible. From the moment you enter our office, our expert team will be with you every step of the way and make sure you leave smiling!
From Confident Smiles and Implants - O'Fallon's own description. Not part of the ranking.#5 Dr. David King
3009 State Hwy K, O'Fallon, MO 63368
37/100Ranked #5 because of access and services: open evenings until 7 PM and Saturdays until 2 PM, 7 of 17 services offered.
- Hours
- Mon 10 AM–7 PM · Tue 9 AM–5 PM · Wed 8 AM–5 PM · Thu 10 AM–7 PM · Fri 7 AM–2 PM · Sat 8 AM–2 PM · Sun closed
General dentistryEmergency careImplantsCrownsBondingCosmeticFull restoration
In their words
If you're looking for a dentist near me that is a Smile Generation Trusted dentist Dr. David King in O'Fallon, MO can ease your dental concerns. Stop by O'Fallon Modern Dentistry to get anything from a dental cleaning, cosmetic dentistry, to a root canal, or a dental emergency.
From Dr. David King's own description. Not part of the ranking.
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How we ranked O'Fallon dentists
This list covers the 5 O'Fallon clinics that open Saturdays, Sundays or after 6pm. We scored 5 O'Fallon clinics on 6 factors: reputation 45%, review volume 15%, recency 10%, access 15%, services 10%, profile completeness 5%. 16 were excluded (16 duplicate listings). Google ratings are not yet collected, so each score is renormalised over the factors we measured. Data from Google listings and clinic websites, refreshed October 21, 2026.
Paid placement never changes a rank or score. Featured clinics are paid, labelled, limited to 3 and shown above the ranking, outside it.
| Factor | Weight | Computed from | In O'Fallon data |
|---|---|---|---|
| Reputation | 45% | Bayesian-adjusted Google star rating | Not yet collected |
| Review volume | 15% | log10(review count) against the city maximum | Not yet collected |
| Recency | 10% | Share of reviews in the last 12 months | Not yet collected |
| Access | 15% | Evenings, Saturday, Sunday, same-day/emergency, accepting new patients | Measured |
| Services | 10% | Services offered out of 17 | Measured |
| Profile completeness | 5% | Named dentists, years open, languages, insurance, photos | Measured |
Dentists Open Saturday & Sunday in O'Fallon, MO: frequently asked questions
Which dentists in O'Fallon are open on Saturday?
5 of the 5 clinics on this page open on Saturdays. The highest-ranked are Dentist O'Fallon, Jeffrey J. Harris, DDS and O'Fallon Modern Dentistry, and Dentist O'Fallon opens 9 AM–5 PM.
Which dentists in O'Fallon are open on Sunday?
1 of the 5 clinics on this page open on Sundays. The highest-ranked are Dentist O'Fallon, and Dentist O'Fallon opens 9 AM–5 PM. These counts come from clinic hours and profile data as of October 2026, re-checked every week.
Which O'Fallon dentists are open late?
1 of the 5 clinics on this page stay open after 6pm on at least one weekday. Dr. David King has the latest weekday hours, until 7 PM on Mondays.
How are weekend and evening dentists in O'Fallon ranked?
Each clinic has one DR Score from 0 to 100, built from 6 published factors: reputation, review volume, recency, access, services and profile completeness. This page lists the 5 O'Fallon clinics that open Saturdays, Sundays or after 6pm, in DR Score order. No clinic pays for its position.
Update log for O'Fallon
- : DR Scores recalculated for 55 clinics.
- : 16 duplicate listings merged.