Super happy with our purchase of the Medit i500 from Cad Ray. Overall its a work horse scanner that has handled anything weve thrown at it. The key to success with it is definitely taking the time to actually learn how to use it after purchase. Ca...read moreSuper happy with our purchase of the Medit i500 from Cad Ray. Overall its a work horse scanner that has handled anything weve thrown at it. The key to success with it is definitely taking the time to actually learn how to use it after purchase. Cad Ray has an immense library of straight forward education videos that are updated basically daily. I havent done the 2 day course but that is also included in the purchase. You really cant find that sort of service and education with any of the other scanners on the market. Id recommend them to anyone.read less - 6/26/2020
Shilpa Jobanputra
New user and absolutely love my Medit i500 scanner. Easy to use, fast, affordable and so quick for a first timer IOS user like myself. Customer service is fantastic, as are the sales people. It’s good to know you have strong knowledgeable people beh...read moreNew user and absolutely love my Medit i500 scanner. Easy to use, fast, affordable and so quick for a first timer IOS user like myself. Customer service is fantastic, as are the sales people. It’s good to know you have strong knowledgeable people behind the scenes ready to help at every turn. I would recommend this product highly. Happy in PAread less - 9/09/2020
Inna Vinnikov
Frank was fantastic in helping me obtain my medit scanner. He answered all of my questions in detail. After the purchase of the scanner, he continued to follow up with me and presently remains a tremendous support with any concerns that may arise. Wa...read moreFrank was fantastic in helping me obtain my medit scanner. He answered all of my questions in detail. After the purchase of the scanner, he continued to follow up with me and presently remains a tremendous support with any concerns that may arise. Was a great experience overall from transitioning my practice into a digital world!read less - 1/25/2023
Gary Benson
Our orthodontic office is new to scanning and printing, but CAD-Ray, Laura, Medit, and SprintRay have made the whole transition a huge win. Our first scan and print was cleaner than any traditional impression/pour up we've ever produced. On our first...read moreOur orthodontic office is new to scanning and printing, but CAD-Ray, Laura, Medit, and SprintRay have made the whole transition a huge win. Our first scan and print was cleaner than any traditional impression/pour up we've ever produced. On our first full clinic day, we scanned 14 arches and managed to stay on schedule! We were waiting for this technology to be affordable, fast, accurate, and reliable, and we can now say we are there. Thanks for all your help and ongoing support.read less - 6/25/2021
Pretty much echoing what everyone else has said. Frank DeLuca and the whole team at CAD-RAY are fantastic. The best customer service and support in dentistry, hands down, not even a close second. We are thrilled with our Medit scanner and will certai...read morePretty much echoing what everyone else has said. Frank DeLuca and the whole team at CAD-RAY are fantastic. The best customer service and support in dentistry, hands down, not even a close second. We are thrilled with our Medit scanner and will certainly be choosing CAD-RAY for any future purchases.read less - 12/30/2021
Maggie Sh
I’ve been using Medit 500 since spring of 2021 and really like it. The support system has been very good so far. I just called yesterday and spoke with Frank Deluca, he was very informative and helpful. - 12/07/2021
Yordanka Ivanova
I had been on the market for a scanner for a while and the i700 is my first intraoral scanner purchase. We are still new to the scanning world and its capabilities. Frank DeLuca was my main contact from the beginning and the person who did our traini...read moreI had been on the market for a scanner for a while and the i700 is my first intraoral scanner purchase. We are still new to the scanning world and its capabilities. Frank DeLuca was my main contact from the beginning and the person who did our training. The scanner is incredible and has surpassed our expectations even though we haven’t used it to its full potential yet. Frank has been amazing and always there to guide us every step of the way. Having such fabulous customer service and support from CAD-Ray was key for us when making this purchase decision. Thank you!read less - 6/23/2022
jorge lube
I live in Puerto Rico and Cad-Ray made my decision easy when it comes to purchasing Dental equipment. I decided to call after having connection issues with my i700 and Andy responded immediately. He was very pleasant to work with and within 2 days, r...read moreI live in Puerto Rico and Cad-Ray made my decision easy when it comes to purchasing Dental equipment. I decided to call after having connection issues with my i700 and Andy responded immediately. He was very pleasant to work with and within 2 days, received my brand new cord. I can always always rely on Cad-Ray for their incredible support and highly recommend this company to anyone looking to explore digital dentistry.read less - 12/30/2021
David Wheeler
I have had excellent , prompt , customer service and support from the entire team . Especially from Frank DeLuca as I move along the learning curve. His patients and expertise is much appreciated - 1/24/2023
Yuriy Yakubov
Got Medit scanner from CAD-ray 5 months ago. Today got help from Rayan. Rayan has a lot of patience ,explained everything I asked him . Absolutly satisfied. Great service, great support. - 10/19/2023
Roopam Garg
I purchased Medit scanner few weeks ago . Frank and Nick have been really excellent answering my questions promptly. The scanner itself is wonderful with no back fees , customer service is top notch. The entire team works fast and helps you out. I st...read moreI purchased Medit scanner few weeks ago . Frank and Nick have been really excellent answering my questions promptly. The scanner itself is wonderful with no back fees , customer service is top notch. The entire team works fast and helps you out. I strongly recommend this scanner!read less - 6/17/2020
Se ve muy bien, aunque yo le tengo, pánico, a los Dentistas, Sorry, pero tengo que ir, Ni modo - 2/25/2015
Geoff Seuk
Best service and support. Period. The product I purchased (Medit i500) is fantastic, but integrating it into my practice has been super smooth because of the support from Cad-Ray. They not only answer the phone with REAL people, but those people ACTU...read moreBest service and support. Period. The product I purchased (Medit i500) is fantastic, but integrating it into my practice has been super smooth because of the support from Cad-Ray. They not only answer the phone with REAL people, but those people ACTUALLY want to help you. Kind of a novel concept in this day and age. Definitely the best customer service I've experienced from an equipment dealer, and I've purchased equipment from just about all the big companies. Will definitely purchase from them in the future. I highly recommend them.read less - 8/07/2022
John Allen
fantastic support, I always ask random, specific to me, could be found on a training video, questions and they always quickly tell me how to fix my problem. - 6/16/2020
Anthony Vu
If you are looking to buy a Medit, you shouldn't look anywhere else to buy it. My Medit i700 was having issues on a Friday and I was able to get Heather from Cad-Ray to troubleshoot the issue. She remoted into my computer to try and troubleshoot the ...read moreIf you are looking to buy a Medit, you shouldn't look anywhere else to buy it. My Medit i700 was having issues on a Friday and I was able to get Heather from Cad-Ray to troubleshoot the issue. She remoted into my computer to try and troubleshoot the issue and helped with getting Medit on board as well. Once it was confirmed it was a hardware issue, I got sent a BRAND NEW Medit i700 OVERNIGHT.Can you believe that? Service and warranty that Cad-Ray offers is really TOP NOTCH.Highly Recommend Cad-Ray for all things MEDIT. Thank you Heather from Cad-Ray for all your help!!!read less - 2/02/2022
jeremiah choi
Never had customer care like Cad-Ray, you can't go wrong purchasing through them. Trios is a great scanner. All the reps at Cad-Ray are very knowledgeable and helpful and will make sure you are up and running smoothly. Above and beyond customer serv...read moreNever had customer care like Cad-Ray, you can't go wrong purchasing through them. Trios is a great scanner. All the reps at Cad-Ray are very knowledgeable and helpful and will make sure you are up and running smoothly. Above and beyond customer service.read less - 8/27/2022
I’d like to tell you a story about CAD-Ray.com.I ordered a VHF N4+ from CadRay. About two weeks after the order was placed, they called me up and said, “VHF just got an exclusive with “The Big Boys” so they are cutting ties with all the little indepe...read moreI’d like to tell you a story about CAD-Ray.com.I ordered a VHF N4+ from CadRay. About two weeks after the order was placed, they called me up and said, “VHF just got an exclusive with “The Big Boys” so they are cutting ties with all the little independent distributors. They just called us, and we just found out. What this means is that we won’t be able to provide you service after purchasing the VHF mill that you just bought.”Now, they could have just left it at that. They could have said, “Sorry, it’s out of our hands.” They could have said, “We appreciate your business, but it’s not our fault.” They could have said, “That’s the way the cookie crumbles.”But they didn’t.Frank Weinstein calls me up and tells me that they want to make this right, so they are going to hook me up with a brand new Imes Coritec One+ for the same price as the VHF. The Coritec One+ is like the Mercedes of mills for in-office. This is the new model that just barely came out. It is a 5 axis mill. It does wet and dry milling. It does blocks and pucks. It mills all materials know to man, including Vibranium. It can also fly the space shuttle, and make all your wishes and dreams come true. It’s that good. It came with the laptop, Exocad, all the tools, and all the bells and whistles. It came fully loaded. It came white glove delivered to my office. It came with in office training. It came with the extra bur package. It came with everything and the kitchen sink.So, I paid 36k for a mill, and because of something that was not Cad-Rays fault, they ended up giving me a 60k mill for the same price.In the words of the great Tony Stark: “That’s how Dad did it. That’s how Cad-Ray does it. And it’s worked out pretty well so far.”Thank you Frank Weinstein and Armen Mirzayan for having outstanding customer service and going the extra mile every time.read less - 4/09/2021
Matt McReynolds
These guys are ALWAYS there to help if you get stuck. I’ve been happy with the mill (coritec one) and scanner (i500) I bought from them 2 years ago. I’d do business with them again. - 7/01/2021
Dino Mantis
I purchased the Medit700 a couple of months ago. I have the Cerec Primescan and what a difference!!! The Medit is easy to use and efficient!!! They have a great support system> Laura Geney is amazing. She is almost like being on call anytime I have a...read moreI purchased the Medit700 a couple of months ago. I have the Cerec Primescan and what a difference!!! The Medit is easy to use and efficient!!! They have a great support system> Laura Geney is amazing. She is almost like being on call anytime I have a question. If she is not available (which was only once) the person that helped me logged in and took care of my problem!! I highly recommend this scanner!!!read less - 12/30/2021
Chris Kleist
Cad-Ray is the absolute best if you're in the market for digital dental tools. I have purchased two Medit scanners through them. There will be hiccups with any complex piece of machinery, but every time I have needed Cad-Ray, they have been there. I ...read moreCad-Ray is the absolute best if you're in the market for digital dental tools. I have purchased two Medit scanners through them. There will be hiccups with any complex piece of machinery, but every time I have needed Cad-Ray, they have been there. I recently had a scanner go down. I called Cad-Ray tech support and they got me on the phone with Medit immediately. Within a day, a replacement scanner was sitting on my desk. It doesn't get much better than that.read less - 10/03/2024
Penelope Lee
Frank and his team have always been ready and able to help us with any issue we’ve come across in the last 2 years since we purchased our mill and equipment from them. Today, Griffen went above and beyond to find a solution to our software issue. I w...read moreFrank and his team have always been ready and able to help us with any issue we’ve come across in the last 2 years since we purchased our mill and equipment from them. Today, Griffen went above and beyond to find a solution to our software issue. I was able to finish a project on time for a patient in pain because of his dedication. “We’ve never had a more helpful team for any of our equipment” was a quote from our head Doctor today. Excellent job Griffen and team!read less - 5/14/2025
Krupal Chhotu
Finally going digital and Cad-Ray was the place to start. Got the Medit i500 and began scanning right away. Now I am doing digital dentures, making my own surgical stents, etc. The support available is the best. "Frank" is always available! :) - 10/09/2019
Much like dentistry is not a commodity, CAD-RAY's service is not a commodity. What CAD-RAY does so well is not just sell pieces of technology affordably and smoothly, but provides service, training, and insight so these tools can be used meaningfully...read moreMuch like dentistry is not a commodity, CAD-RAY's service is not a commodity. What CAD-RAY does so well is not just sell pieces of technology affordably and smoothly, but provides service, training, and insight so these tools can be used meaningfully and profitably.read less - 12/12/2022
Jay Arnold DMD
Loving my Medit i700. My crowns have never fit better, and scanning is SOO easy. I started with cad-ray with the i500. The training and support have been second to none. I upgraded to the i700 shortly after it came out, and recently had a warranty is...read moreLoving my Medit i700. My crowns have never fit better, and scanning is SOO easy. I started with cad-ray with the i500. The training and support have been second to none. I upgraded to the i700 shortly after it came out, and recently had a warranty issue with the new scanner. immediately after calling them with my problem. A new scanner was overnighted to my office, I was very pleased, and had minimal down time.read less - 4/05/2022
Mark Evans
I’d like to tell you a story about CAD-Ray.com.
I ordered a VHF N4+ from CadRay. About two weeks after the order was placed, they called me up and said, “VHF just got an exclusive with “The Big Boys” so they are cutting ties with all the little ind...read moreI’d like to tell you a story about CAD-Ray.com.
I ordered a VHF N4+ from CadRay. About two weeks after the order was placed, they called me up and said, “VHF just got an exclusive with “The Big Boys” so they are cutting ties with all the little independent distributors. They just called us, and we just found out. What this means is that we won’t be able to provide you service after purchasing the VHF mill that you just bought.”
Now, they could have just left it at that. They could have said, “Sorry, it’s out of our hands.” They could have said, “We appreciate your business, but it’s not our fault.” They could have said, “That’s the way the cookie crumbles.”
But they didn’t.
Frank Weinstein calls me up and tells me that they want to make this right, so they are going to hook me up with a brand new Imes Coritec One+ for the same price as the VHF. The Coritec One+ is like the Mercedes of mills for in-office. This is the new model that just barely came out. It is a 5 axis mill. It does wet and dry milling. It does blocks and pucks. It mills all materials know to man, including Vibranium. It can also fly the space shuttle, and make all your wishes and dreams come true. It’s that good. It came with the laptop, Exocad, all the tools, and all the bells and whistles. It came fully loaded. It came white glove delivered to my office. It came with in office training. It came with the extra bur package. It came with everything and the kitchen sink.
So, I paid 36k for a mill, and because of something that was not Cad-Rays fault, they ended up giving me a 60k mill for the same price.
In the words of the great Tony Stark: “That’s how Dad did it. That’s how Cad-Ray does it. And it’s worked out pretty well so far.”
Thank you Frank Weinstein and Armen Mirzayan for having outstanding customer service and going the extra mile every time.read less - 4/02/2021
Iseoluwa Adedeji
Just got this scanner a few weeks ago. Has changed my workflow. Easy scanner to use. What's truly great is the support behind the product. Whether by call or fb messenger, I have never not been able to reach someone who solved the issue! Very pleas...read moreJust got this scanner a few weeks ago. Has changed my workflow. Easy scanner to use. What's truly great is the support behind the product. Whether by call or fb messenger, I have never not been able to reach someone who solved the issue! Very pleased so far.read less - 6/19/2020
dr sheth
It was very powerful and enlightening experience today to do 2 day sessions with Dr. Armen and Damien. I learned a lot, quite amazed by how much we can do with knowledge and Medit scanner. As usual great support by CAD-RAY always. I absolutely love M...read moreIt was very powerful and enlightening experience today to do 2 day sessions with Dr. Armen and Damien. I learned a lot, quite amazed by how much we can do with knowledge and Medit scanner. As usual great support by CAD-RAY always. I absolutely love Medit scanner.read less - 8/08/2021
Aaron Olson
This product is the best out there. Do the math and your ROI makes more sense than most products we purchase as dentists. Get on the digital train or you’ll be left behind. This is the best product to make the jump with. - 6/16/2020
Had a good experience when purchasing my scanner, it was very easy, and to date after three months of using the scanner no support is a plus, anytime I call me I will answer and troubleshoot - 7/10/2022
Robert Loughlin
I Love it !!! I needed to replace my Omnicam because the computer hardware was old and not able to keep up with the software upgrades. The computer upgrade costs from Sirona were cost-prohibitive (another reason why the Medit is so good) and I wasn...read moreI Love it !!! I needed to replace my Omnicam because the computer hardware was old and not able to keep up with the software upgrades. The computer upgrade costs from Sirona were cost-prohibitive (another reason why the Medit is so good) and I wasn't about to make the same mistake twice and replace it with another system from Sirona. I was a bit unsure about making a big switch but after speaking with Nick Statly at Cad-Ray, he eliminated all of my reservations and I ordered it. I've used it for the past week and love it. Setting it up and getting it running was simple. I would not describe this as a do it yourself process, it's much easier. If you can make a cup of coffee you can set the scanner up and start making excellent scans. All one needs to do is watch the very well laid out and easy to follow videos and save a lot of money. The image quality and ease of use hands down beats the Omnicam. Also during the current pandemic, I really feel better about being able to cold sterlize the tips vs the omnicam's just "wiping down." I almost hope my desktop scanner craps out so I can get the Medit desktop. I'm glad I listened to you Nick!!!read less - 6/04/2020
Great service and scanner support! Company delivers well above my expectations! Love my medit scanner. - 1/29/2023
ycsongdds
I have had zoom training with Andy today. I can honestly say that he was the best. He was patient and very throughal. I learned a lot I would ask him again when I need support again Thanks Rodger - 3/15/2023
A C
Kaila and Laura were amazing to work with. I would not hesitate to buy again from them. Super helpful/available and one of the best experiences I’ve had making such a big investment in equipment like I had to make for my practice. Way to go Cad Ray f...read moreKaila and Laura were amazing to work with. I would not hesitate to buy again from them. Super helpful/available and one of the best experiences I’ve had making such a big investment in equipment like I had to make for my practice. Way to go Cad Ray for running a solid business!read less - 11/15/2024
Dr. Terry Zervos, DDS,PA.
Today I had to order new tips and Laura was EXTREMELY helpful, Cad-Ray has all the products you need for digital dentistry and they do Education, if you buy Medit scanner from them they include 12 CE training course. Cant just buy a Lamborghini you h...read moreToday I had to order new tips and Laura was EXTREMELY helpful, Cad-Ray has all the products you need for digital dentistry and they do Education, if you buy Medit scanner from them they include 12 CE training course. Cant just buy a Lamborghini you have to learn how to drive it!read less - 7/02/2020
Scott Terry
Six Stars! On a scale of one to five, I give CAD-Ray six stars. They really are that good. If you are purchasing an intra-oral scanner, I would recommend buying the Medit I-700. It is a dream machine. But, if you want incredible service every time, y...read moreSix Stars! On a scale of one to five, I give CAD-Ray six stars. They really are that good. If you are purchasing an intra-oral scanner, I would recommend buying the Medit I-700. It is a dream machine. But, if you want incredible service every time, you should buy your scanner from Cad-Ray. They have come through with flying colors each time I have contacted them. Their sales team great and their service is amazing. They have volumes of educational videos available, as well. I have worked with Jonathan, Damien, Frank, Armen and Laura. In a time where we are seeing the opposite, CAD-Ray will totally blow you away with the entire experience. I totally appreciate them and their value.read less - 11/01/2021
Jacob Masters
Best dental equipment company I have ever worked with! Great response and super helpful for any issues even years later. - 8/03/2023
Island Dental Lab
Just got my Medit IOS delivered last week and the service from Jon was great! I had a ton of questions before placing the order and he happily answered. This is the type of customer support many dental suppliers are missing. Great company to work wit...read moreJust got my Medit IOS delivered last week and the service from Jon was great! I had a ton of questions before placing the order and he happily answered. This is the type of customer support many dental suppliers are missing. Great company to work with.read less - 6/23/2020
Jorge Gonzalez
Armen is a dentist and knows what a dentist need, on other words cad ray sells technology that works for dentists! - 6/16/2020
Jennifer Hastings
Andy was wonderful with setting everything up and explaining everything. The Medit i700 has been great thus far, easy set up! The only "issue" is that it can be occasionally glitchy. - 1/11/2022
I have had the original iTero, a Trios 3, and a Carestream CS3600. A staff member broke the lens on the Trios and while waiting 3 weeks for an RMA to send it to Poland for six weeks to get it repaired, Carestream was sniffing around and suggested tha...read moreI have had the original iTero, a Trios 3, and a Carestream CS3600. A staff member broke the lens on the Trios and while waiting 3 weeks for an RMA to send it to Poland for six weeks to get it repaired, Carestream was sniffing around and suggested that I trade in my Trios so I did which began a 4 month nightmare with their piece of junk scanner. Absolutely awful customer service from both 3Shape and Carestream. I needed a scanner and had heard great things about it the Medit i500 at the Florida Academy of Coesmetic Dentistry so I got one. It works really well and Medit keeps adding new and useful features and their architecture is completely open. Two weeks ago, my i500 died so I contacted Cad-Ray surrport and I had a new unit in my office 24 hours later! That's absolutely unheard of in the industry!!! Both Cad-Ray and Medit have positioned themselves to be industry giant killers and they're doing it. The i500 is a phenomenal scanner at a phenomenal price point and service and guidance at Cad-Ray is just plain excellent.If you are thinking about getting a scanner, do it! Just contact Cad-Ray and go for it. You will only be happy about your purchase! Highly recommended!read less - 3/09/2021
Evan Sachs
Great staff and support when needed! There is a bit of a learning curve like with any new tech, but I highly recommend the Medit i500 and the Cad-Ray staff is great. Special thanks to Laura and Jeff for helping out! You guys rock. Great company and ...read moreGreat staff and support when needed! There is a bit of a learning curve like with any new tech, but I highly recommend the Medit i500 and the Cad-Ray staff is great. Special thanks to Laura and Jeff for helping out! You guys rock. Great company and product!read less - 11/11/2020
John Pobanz
We had an outstanding experience purchasing two Medit scanners. The delivery was timely . The onboarding clean. Laura was dazzling with her acumen and quick solutions . We highly recommend the investment in Cad Ray .Pobanz Orthodontics , Ogden Utah :...read moreWe had an outstanding experience purchasing two Medit scanners. The delivery was timely . The onboarding clean. Laura was dazzling with her acumen and quick solutions . We highly recommend the investment in Cad Ray .Pobanz Orthodontics , Ogden Utah :)read less - 12/10/2021
Lora Wonderly
Thank you Frank DeLuca for being so accessible and making everything right again! Customer service is above and beyond. We also love our Medit Scanner - we would be lost without it! - 1/25/2023
Rosemary Toczydlowski
I had a phone call with Frank from support today, and he was awesome! Very helpful and knowledgeable. He sorted out all our issues no problem. Thank you Frank!! - 6/09/2021
Brent Hale
Been using my i700 for a month now and it's been great. The tutorials that Cad-ray provides have been very helpful. This scanner with a fast computer turns out great results. - 11/01/2021
Bought a medit 6 months ago and customer service has been nothing short of amazing. Always very responsive and helpful. Great scanner, too! - 6/16/2020
Jacob Rogers
I love this scanner. Seriously, how can you fit so much quality into the scanner, software and support and such a low price? Magic?!?! Probably. But, for real, we really like using this scanner and it produces great results. Best dental purchas...read moreI love this scanner. Seriously, how can you fit so much quality into the scanner, software and support and such a low price? Magic?!?! Probably. But, for real, we really like using this scanner and it produces great results. Best dental purchase I've ever made!read less - 10/09/2019
best customer service on the planet. very easy to use. and always fine tuning to make the user experience better. - 6/16/2020
Shant Aharonian
Cad-ray has to be the best company to work with when it comes to digital dentistry solutions. Here are the reasons why: 1. Experience. Everyone in the company has extensive experience in dentistry. They have used all digital platforms and offer custo...read moreCad-ray has to be the best company to work with when it comes to digital dentistry solutions. Here are the reasons why: 1. Experience. Everyone in the company has extensive experience in dentistry. They have used all digital platforms and offer customers first hand experience. 2. Honesty. Based on their experience they share all the good/bad of different systems. They work with you to find a solution that works best for you. Not sell you the piece of the equipment that gives them the biggest commission. 3. Support. Cad-ray offers the missing piece of the dentist/digital manufacturer puzzle. Many other distributors sell you a piece of equipment but don’t have true day-to-day experience with that equipment. Cad-ray’s team openly share their expertise to help customers optimize their workflows with great technology. 4. Passionate. The Cad-ray team is extremely passionate about their craft. They truly believe in what they have to offer. I took Armen Mirzayan’s course on intraoral scanning and it was truly mind blowing. Armen’s insights will help any dentist optimize their craft. I purchased the full sprintray 3d printing ecosystem the help of Frank. I plan to purchase more equipment from cad-ray. Also, Jesse is a genius in regards to all aspect of digital workflows. I’m truly grateful for this company and everyone who I’ve worked with so far.read less - 10/07/2022
Photogammetry has set the highest standard for full arch accuracy in digital dentistry for edentulous patients with multiple implant fixtures. An easy scan in under 15 seconds captures enough detail...
In this clinical presentation, we demonstrate the removal of a crown that has recurrent decay. The bleeding tissue was managed with a double cord technique and expasyl and the margin...
Replacing a crown with open margins and recurrent decay Setting up the case with medit i500’s meditlink software Imaging the preparation with Medit i500 and segmentally processing the prep...
You must log in to post a comment.