prichbt, is the smash hit duo, lmfao. we'll take you backstage to get to knows the guys behind the famous shuffle. this is "nightline," july 12, 2012. >> good evening. going to the dentist is a trip that most adults and kids dread. but the sudden death of an 8 eerld little girl is draug attention to a trend far scarier than any drill. across the country, dangerous and potentially lee thel sedatives are being used on children as young as 18 months for procedures as simple as a cleeng. abc's brian ross set out to find out why for tonight's brian ross investigates. >> reporter: for 8 eerld raven, it was a routine trip to the dentist for a kach cavity and

cleaning. >> she wanted to have pretty teeth. >> 5 eerld diamond needed some cavity filled. >> later that day she was going to attend the princess party. >> more than a dozen other children across the country, the trip to the dentist would lead to death. >> who thinks that they're going to take their daughter to the dentist and never bring her home? >> it is a growing problem and most of the dentists involved in the death continue to practice. >> how is it you're still working as a dentist? >> thank you very much. >> sit a skand until many cases driven by tentists who are told they can increase their bottom line, hundreds of thousands of dollars in extra profit by giving their young patients a quick but all too often dangerous dose of sedatives, supposedly to make it safer to work on the children. >> there are no safe sedatives or an stettics. >> raven of virginia died after her dentist gave her what was supposed to be a minimum dose of an oral sedative. >> they could get a lot more

work done and so the children aren't as nervous and scared. >> records would later show, raven got three times the average range of sedative for a child her age, a lethal dose according to the medical examiner. >> all of a sudden i could hear the balance. we rushed to the back and that is when i saw my daughter in the dental chair. they were performing cpr on her. >> but raven's parents say the dentist didn't know thousand save her. and they watched their daughter 90 minutes later. >> i kept saying, raven, come on back, we need you. we need you to be with us. but she didn't hear me. and then i saw the machine just go from up and down to nothing. >> robin and her father set up a foundation in raven's name. the website has a long list of children who have since died after receiving sedation or anesthesia at the dentist.

>> this is something that's being presented to the practicers, to the dental community as a very easy thing to do. and nothing could be further from the truth. >> wer rung an ekg. >> a dental an steezologyist in michigan explosive growth in the number of family dentists using oral sedative on their youngest patients, many with only a few days training for dealing with an emergency. >> 45, 60 seconds may be all the time they have to save the child's life. >> it's very real scenario. >> our abc news investigation found that thousands of family dentists have received training on what are weekend courses in oral sedation. this one held in the hotel in the boston area. it is headed by two dentists. >> if people are probably trained, dedags in den stris is very, very good thing.

how can someone learn in how to handle emergency situations in just a two and a half or three-day program. >> what does that come down to when there's a problem in the dentist office? >> you need to pray. >> the people who run the weekend sessions say know safety is by far our top concern and emphasis. but the dentists are also told there's a lot of money to be made in sedating patients. >> it is a slightly deeper form of sedation. >> this from one of the company's training videos on the bottom line benefit of sedation. >> this is a continuing trend in the office, then it's -- then you become a profitable office. >> the founder of this group, michael, declined to be interviewed by abc news. he put it bluntly in one article, sedation can mean tens of thousands of dollars of extra income in your pocket annually and as much of half a million extra in your retirement.

>> is that the reason to get rich as a dentist? >> absolutely not. >> we showed this to american pediatric of accompany. >> he teaches pediatric dentist at the ufrt of illinois, it can make it safer to deal with children who squirm in the dentist chair or have anxiety. >> but he says three-day courses do not provide adequate training for all the problems that can arise in dealing with children. >> if this is all you've got, you've never been trained in sedation, then i would consider it inadequate. >> even dentists with extensive training have made fatal errors. >> the dentist who gave diamond excessive doses of sedatives showed a complete lack of understanding of conscious sedation. yet this doctor is back at work

in chicago after he went through retraining and his license was restored. >> you refused a gross malpractice, professional incompetence and you're still working as a dentist? >> actually i went to the department, i was able to do -- >> how is it you're still working as a dentist? that dentist told us he no longer takes children as patients, but his website says otherwise. and today he is still a member in good standing of the american academy of pediatric dentistry. >> thank you, brian. coming up, a massive avalanche buries climbers at 13,000 feet. we'll take you to mountain with the search and rescue teams. down here, folks measure commitment by what's getting done. the twenty billion dollars bp committed has helped fund economic and environmental recovery.

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"nightline" continues from new york city with bill weir. >> mt. maudit, the foreboding mountain where at least nine climbers lost their lives in the deadliest avalanche in recent history today. >> it was on a slope that atracks advanced climbers. abc's nic reports from the scene in the french alps. >> reporter: this braet taking snow capped u mountain in the alps is called cursed peak. one of the most popular mountains to climb and one of the most deadly. dozens die here every year but today was the worst day in living memory. it was just af 5:00 in the morning, 24 hikers in two groups made their way up to 13,000 feet up. >> it's an incredibly beautiful

range. it's a fantastic place to go to go climbing. >> at the group hike, a block of ice broke off. it became a huge dense mass of snow, 160 feet wide and moving at more than 100 miles an hour. it caught them and swept them down the mountain. >> one of the hikers managed to call for help on his cell phone. and this is what rescuers were up against, look at the size of the avalanche compared to the people trying to help. >> rescuers launched helicopter and used heat seeking devices to find zur survivors. they managed to save two people. >> this is one of the rescuers and snapped these images just minutes after the avalanche. >> early in the morning we got a call. we tried to protect people from the wipd and cold. >> one of the chopterred out was daniel. he survived amazingly, after

falling 820 feet. >> we were taken away by it, he says. we couldn't resist a whole block of snow. >> and this is an example of what that whole block of snow looks like up close. a snow border in new zealand riding one second and the next trying to outrace an incoming avalanche. he is overcome as his camera captures what he saw and heard inside as the light faded. incredibly he survives. >> it's like being stuck in a washing machine full of rocks. >> an avalanche with is a sudden fall of large mass of material. it's down the side of a mountain. it can be triggered by vibration or change in temperature. it's an unusually snowy here and combined with high winds, that makes this mountain vulnerable to avalanche. >> avalanches happen when you have either deep snow from fresh snowfall or have high winds that move snow around. >> james is documented the

melting of ice for years. he's been climbing in the same area of the alps. >> where these guys were climbing, it's serious climbing. it's plenty steep enough to get hurt if you make a mistake. >> thanks to global warming, glaciers here have sclung 25%. >> it acts like a glue to keep the mountain together is beginning to melt and collapse. >> stewart directs the local avalanche academy. >> warmer temperatures make it more likely to collapse and there's lot of speculation it will collapse. that's what triggered the avalanche this morning. >> this year has been particularly dangerous on mountains. there have been 34 avalanche deaths in the u.s. compared to only 25 last year. but avalanches are nothing new and these climbers here won't stop what they love despite the dangers. >> for a lot of people t danger is part of the excitement. it's part of the adrenaline rush. but of course nobody actually

wants to see people get hurt. but unfortunately that part of the game. >> sadly these climbing community knows it all too well after at least nine died today. >> we pushed our feelings away because this time you need to act. >> how do you feel now. >> i feel tired and sad because one of my friends died in this accident. >> even the most experienced climber can get caught in an avalanche. for "nightline," i'm nic sclif rin, france. >> thanks to nick for that report. coming up next, we'll change geers and go with the lmfao topping the charts of electric hits like sexy and i know it, we hang backstage with lmfao. you know what i love about this country? trick question. i love everything about this country! including prilosec otc. you know one pill each morning treats your frequent heartburn

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you can hear their cds blaring from the speakers of between sleep overs and frat parties, this band member, lmfao has kwielt the musical pedigree. juju chang discovered all of that and more when they took her backstage and out on the town. >> reporter: it's as if they're party rock anthem infected our brains. they're sales on itunes last year was second only to adele's rolling in the deep. >> fans young and old suddenly felt sexy, and i know it. they invited us to join the party rock crew. during the new york city leg of their tour and answer the question, who are lmfao really?

turns out their music royalty, red fro is sky blue's uncle t son and grandson of the man who launched the kreers of michael jackson and dianna ross barry junior. >> it was a skill that we were barry gordie's offspring. >> but it was sky blue's not so famous grandmother who suggested lmfao, text language for laughing my, well, you know the rest. >> what do you think of your knew name? >> and she replied, you can't be serious. >> for a bunch of 4-year-old, what does lmfao stand for. >> loving my friends and others. boom. >> it saul started here, raised with white mothers they both say they explored the other side of their ethnicity, they rebelled. >> we grew up in the same area, both went to the hood and did the whole hood thing.

i want to be stuck in this craziness. >> sky blue dropped out of high school and was living out of his car for a time. >> i had a roof over my head. all the person in the world could understand me was this dude. >> you can sleep on the floor. >> they took me backstage to show me their trademark style. first stop, body paint. >> what explains the love of seeb ra. >> it started when i was a kid because i'm half black, half white, and a lot of kids would call me zebra. so that was my first obsession with zebra animal. >> their tech know colored performances designed to make people laugh. that's the point. >> fans of all ages backstage were trying to sing and dance along. >> i'm doing it. their costumes are ed gi as

their lyrics. >> big bad shorts. >> you can sell these. >> their costumes appeal to their youngest fans. but adults are posting their kids on youtube mimicking the move and singing the racy lyrics. >> did it ever occur to you that you would have 4-year-old fans? >> we definitely imagined the demographic that would be listening and it wasn't 4-year-olds. it was basically adults, you know. >> reporter: you get moms yelling at you for ruining their kids? >> no. my kids first word was wiggly wiggly wiggly. >> they're not sorry for party rocking, our songs like hit shots sending the wrong message? >> you're not glorifying drinks, your glorifying binge drinking. >> no. you take a shot. >> still their hip hop

background fused with double-digit sensibilities resulted in the seventh most watched video on youtube ever. >> did you ever get that criticism that you're not really serious musicians? >> everything you've heard, i've mix pd anded. it's on the laptop, we record everything at the house. >> you're right here on the frontier of the music world. >> rapping is -- it still has melody in rap. it's just shorter notes. more like jazz like beat bop. >> not bad. that's just like these next tunes stuck in our heads. i'm juju chang for "nightline" in new york. >> likable guys. thanks juju chang. we could not call ourselves self-respects music fans if we did not wish a golden anniversary to a bunch of guys who played the marquee club in

london 50 years ago today, top that, lmfao. thank you for watching. abc news, gma in the morning, jimmy kimmel next. we'll see you tomorrow. >> dicky: up next on an all-new "jimmy kimmel live," billy crudup, from "trust us with your life", fred willard, and unnecessary