As another poster said, when you start working in an environment where you watch people abuse the system you will change your outlook somewhat. It's not a knock on you whatsoever. I too was this idealistic one day. Compassion isn't something that is automatically generated with every patient, nor is it something that you will feel for every person in your personal life.
I work in a children's hospital providing care to the very people you are talking about. Almost all are on medicaid and have mouths that are disease-ridden. Let me give you a scenario of two different types of patients/"parents" I will see. These are are two situations I've actually experienced.
Scenario 1: On Call
16 y/o female comes to the ED with a CC of a fracture of her maxillary right central incisor. The fracture is not into the pulp of the tooth but is esthetically sizable. After the usual inspection, I come to realize that this isn't a true emergency situation. The patient and her mother showed me extreme attitude from the first second I walked into the door. This girl had previously traumatized this tooth years ago and had it fixed. The bonding had simply chipped off. I then informed the mother and daughter that the ED is for true emergency situations. It is not, though, a walk in dental clinic. Her need was routine and there were true traumas waiting to be seen and I was not going to fix her tooth. I then had a 300lb AA mother and her daughter berating me because I wouldn't "fix her tooth" even though they are adamant it was done before in the ED. After getting yelled at for 5 minutes, the truth comes out. They had a family funeral coming up, they wanted it fixed for esthetics and her insurance would only cover it if she came in through the ED, so they lied to get her triaged into my chair. Both are shocked I won't do something they feel that they are entitled to and let me hear about it.
Scenario 2:
A 9 y/o AA female comes in with the identical situation as the previous girl. She had been hit in the mouth that day and experienced a class II fracture of one of her maxillary incisors. From the second I walk in the door, the mother and daughter were extremely appreciative that I had the time to see them. The girl was crying a bit because she was scared and worried about her "ugly tooth". The mother asked me if I could simply get her daughter out of pain because she said "she realizes that I am busy and she's sure there are other more important needs waiting". Usually in the ED we will just place a composite "band-aid" on the tooth until they can be seen for a bonding buildup during normal hours. That night I spent an hour at midnight doing an esthetic buildup for the girl when I didn't have to.
When a patient walks in your office, they don't automatically earn your compassion. We are human. You won't feel compassion and empathy for every single person. And you know what? That doesn't make us bad people. In my first scenario, I did not even feel the slightest bit of compassion for the mother or daughter. Both walked in like they were owed something, tried to deceive me to get treated, and then verbally attacked me when I called their bluff. The second patient was appreciative of my time and I felt like I wanted to go out of my way to help her out. They realized they were fortunate to be at a hospital where the resident is in-house and expressed their gratitude. I couldn't wait to fix her tooth.
The unfortunate thing is that for every type of patient in the 2nd scenario, I see 20 others that act like those in the first. When you deal with this type of patient pool on a daily basis like a lot of us do on this board, you become a little jaded. You too will see this dichotomy in patients one day...those who are there and feel like you owe them something because of their poverty or something else, and those who are good people who are going through rough times. I just wish I saw more of the better ones.
WOW! I've experienced the exact same thing that you had gone through! I feel your pain brother! Amen! Seeing enough of those patients in scenario 1 had made me switching my religion from Idealist to Realist. Just keeping it real brother!
Now back to the OP's question
Why are there so few free dental services?
And when there ARE volunteer dentist services, they are usually just for extractions (gee, thanks now I have a gaping hole) or fillings.?
This is the exact attitude which was mentioned above, AKA: the American Syndrome, that I've experienced (I'm sure that I'm not the only one here), the ingratitude of the folks who're receiving the free services. Instead of acknowledging the free dental service that they have received, they turn around and blame their problems on you, the provider.
They usually aren't for crowns or bridges
When is a "filling" indicated?
A tooth with a small to moderate carious lesion, aka: small cavities. You're lucky if you're getting "just a filling"! For a tooth with a large carious lesion which encroaches the pulp tissue (aka: the nerve), then root canal tx is needed. And NO, we can't "just put a filling in there"!
Why extractions? Two common reasons:
1. Hopeless tooth due to gum disease, negligence of oral hygiene, extensive decays.
2. A bombed out tooth which has to be root canal treated before a crown tx.
So you want to pick option 2. Fine but remember, the overhead of a dental office is around 60%. The fees for root canal and crown tx are around $1200. Who's paying for the lab fee (fabricating the crown)? Root canal and crown tx take at least 2 appointments, 1.5 hours. Will the patient return for the permanent crown? Do you and the patient have the time, resources to complete the tx?
and I have never heard of free implant
I guess you have never heard of the fee for an implant either? $3000 per implant. And it takes 3-6months to complete the tx. Still want an implant? Who's paying for the supplies? you, the dentist, Bill Gates or the Red Cross?
We all know and read about million dollars grants, fundings for medical this and medical that research. Medical fundings for this and that hospital. Has anyone ever heard anything about dental fundings for anything? newspaper, tv, political ads?
A free dental clinic depends on limited resources from churches, large dental suppliers, some individuals, some corporations... to keep it running. Dentists can't just see a patient for 10 minutes, rx and then send the patient to the nearest drug store like a "doctor". We have to provide tx, on the spot.
I don't know how did you come to the conclusion "why are there so few dentists volunteering?" I don't think that the "so few dentists volunteering" is the problem. The problem is the limited financial resource which limits the type of services that volunteering dentist can provide. Another problem is the American Syndrome that I've mentioned above. I volunteered before, during and after dental school as often as I could. I find that 99.99% of the people in the "third world" appreciate the free dental service that they're receiving. Here, they bitch and moan if they have to wait "too long" for the....free service! "how much longer?" "when can my child/me can be seen?" "why this, why that?" "I've been here since..." etc...WTF?! Maybe next time I'd remember to bring DVD movie, refreshment and cookies for you to munch on while you wait for your free dental care.
Do dentists not feel a social responsibility in the same way that many doctors do?
Wow, that's a bold statement! You must had pulled that thought out of your rectum because it really stinks!
I leave you with this:
Crown: $600
Bridge: $1800
Implant: $3000
Filling/cleaning/sealants: Free
Extraction and now I have a gaping hole: PRICELESS