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    Services - Ruben Armienta, DDS

    Cavity treatment

    Dental exams

    Tooth filling replacement or repair

    Teeth cleaning

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    E I.

    Have been going to this place for about 3 years now and the staff is so friendly! We switched from another dentist in diamond-bar because he decided he was going to do a crappy job in pulling out teeth and cleanings. We were recommended to Dr. Armienta by some friends who were family and decided we had nothing to lose. It all started with a simple tooth removal that I did not feel at all compared to the other unexperienced dentist , and he became our permanent dentist. He is very professional and the staff is very polite and respectful. They are also very quick and still end up giving you a good cleaning. The waiting room is always clean and packed with magazines to read while waiting. Like I've seen on a previous tip, don't try to say you floss every day, because he knows lol. Thanks Dr. Armienta! :) A.I.

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    1 year ago

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    3 years ago

    The best! Great staff and Dr. Armienta is solid. Everyone in this office is happy and they simply do great work.

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    7 years ago

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    8 years ago

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    Ruben A.

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    9 years ago

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    Thank you for your comment.

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    11 years ago

    Best Dentist in Town! Always received great service at every visit. Would refer to all my friends. Thanks.

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    Page 1 of 2

    Ask the Community - Ruben Armienta, DDS

    Review Highlights - Ruben Armienta, DDS

    Letty explained what my benefits covered and assured me I could use my FSA to cover my portion of the costs.

    Mentioned in 4 reviews

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    Clements Dental Family

    Clements Dental Family

    4.8(260 reviews)
    1.7 km

    Bottom line: I left feeling like I may have been misinformed about the condition of my teeth. I was…read moretold I had multiple cavities and needed crowns, but after getting a second opinion from my longtime dentist, I was told I had no cavities. That major difference in diagnosis was very concerning and made me lose trust in the practice. Full story below: I chose this dentist based on the positive reviews, but my experience was very disappointing. One thing that immediately concerned me was learning that patients were being offered an incentive for leaving reviews, which made me question how genuine those ratings really are. During my visit, the overall atmosphere felt insincere. What was most upsetting was being told I had three cavities and needed crowns, despite having seen my regular dentist only three months earlier. That diagnosis did not sit right with me, especially because it seemed to be presented before a thorough exam, and when I asked questions, I felt dismissed rather than respected. Because I was uncomfortable, I followed up with my longtime dentist for a second opinion, driving all the way to Riverside because I trust him. I was then told I had no cavities, and that the only possible issue was an older root canal that may need to be redone. That huge difference in diagnosis left me with serious concerns about the accuracy and honesty of my visit here. I am sharing this because I think patients deserve to feel informed, respected, and confident that recommended treatment is truly necessary. Unfortunately, that was not my experience.

    Dr. Clements and his staff are always top notch! I always appreciate the hospitality, friendliness…read moreand cheerfulness of the team and thorough explanation of my messed up teeth and how to better them! So glad to be going there for the past three years. Man more to come! Thanks Doc, Alina, Ally, Steph, Maria, Michelle, Lucy & Ruby! Y'all are the best!

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    Clements Dental Family

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    Whittier Family Dental Office - The most comfortable chair. Fun fact, there's a massage function on this chair!

    Whittier Family Dental Office

    3.7(71 reviews)
    2.9 km

    Dr Yoon is TOP NOTCH. Extremely Efficient, knowledgeable…read moreand very Caring. With my last dentist I was just a number and received mediocre work for my dental issues. They made me dread having to go to the dentist. However, this is NOT the case with Dr. Yoon, she makes you feel comfortable, explaining everything throughly. I highly recommend Dr Yoon, if I could leave a 10-star rating I would.

    I'll admit, I have a great of anxiety when it comes to visiting the dentist. Even thinking of the…read moreword, "dentist" makes me feel as though I bit into a lemon. I recently had such a bad toothache that the right side of my face was going numb, I was sleeping less than one hour per night and I could not drink ANYTHING for over five days. I was in denial, avoided visiting the dentist and took Tylenol so often as though I was eating M & M's thinking the pain would somehow go away. With that in mind, I put on my, "big boy pants" and visited my dentist to find out what the heck was going on with my tooth. Upon my arrival, i was welcomed back by the entire staff with warm smiles and greetings. The staff here are truly friendly, welcoming and professional. In less than three minutes of my arrival, I was lying on a dental chair awaiting the Dr. Yoon, my dentist. Dr. Yoon has this way of calming me down and getting me to relax immediately as she knows that my anxiety level is always high as soon as I step foot into her office. This visit was no different. Dr. Yoon examined me, had X-rays taken and immediately discovered an issue which would require the dreaded root canal. Due to my time schedule limitations, I made an appointment for a few days later and returned. At my next dental appointment, Dr. Yoon discovered that I had a fractured nerve and that this was causing a great deal of inflammation and was the source of my pain and numbness. Dr Yoon and her staff immediately got to work and in less than two hours, It was all done. The pain, numbness and my anxiety were gone. Wow! It felt GREAT to be painless once again. I have to return in two weeks for a permanent crown on the repaired tooth but the anxiety is no longer there and I am actually looking forward to visiting the best dentist and staff in the world. Thank you for the AMAZING service and care to everyone at Whittier Family Dental. I TRULY appreciate you all.

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    Whittier Family Dental Office
    Whittier Family Dental Office - Very well maintained and clean

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    Very well maintained and clean

    Whittier Modern Dentistry - Welcome to Whittier Modern Dentistry in Whittier, CA!

    Whittier Modern Dentistry

    3.8(74 reviews)
    2.8 km

    Really disappointed because I had been here before without issues, which is why I came back…read more When I checked in, they asked if my insurance was still the same, and I confirmed I still have Delta Dental through my employer (I've been with my employer for 3 years). Based on that conversation and my prior visits, I had no reason to think there would be a problem. Later, I found out I was assigned to an out-of-network provider, even though there were in-network providers in the office. That was never clearly explained to me beforehand. They also did imaging that my insurance only covers at certain intervals, and no one told me beforehand that it likely wouldn't be covered. I ended up paying $872 out of pocket, which I did not expect. If I had known any of this up front, I would've made different decisions. Just frustrating overall because I returned based on prior good experiences and left feeling blindsided by the cost and lack of communication. I'd recommend people double-check exactly who they're seeing and what procedures are covered before agreeing to anything.

    I rarely leave reviews, but this experience needs to be shared…read more When my wife first found Whittier Modern Dentistry, I was genuinely impressed. The office is modern, clean, and well-equipped, and the front staff were helpful, courteous, and professional. My initial visit on March 5-6, 2026 felt routine. I underwent a full evaluation including X-rays, CBCT imaging, and periodontal charting. I reported pain, sensitivity, bad breath, and concerns about what felt like visible holes in my molars. Despite this, I was told by Dr. Katelyn Kcomt that I did NOT need any fillings or crowns. I trusted that assessment. However, over the next several weeks, my symptoms continued--food getting stuck, sensitivity, and discomfort--so I scheduled a follow-up visit. At my appointment on April 27, 2026, I was seen by Dr. Laura Beatriz Alvisua. From the beginning, the interaction felt tense. I respectfully asked multiple times to focus on my main concern (possible decay), but the conversation kept shifting to lab results that should have been reviewed weeks earlier. After finally being examined, I was told that: I DO have decay I need fillings and possibly crowns This directly contradicted the original diagnosis. At that point, I was ready to move forward and get the treatment I needed. However, when I briefly mentioned that I had never been contacted about my lab results, the interaction escalated unnecessarily. My concerns were mischaracterized as being about a $100 refund I was addressed in a sarcastic and dismissive manner I was told I was "unprofessional" and "contradicting myself," despite remaining calm The conversation became argumentative while I was still reclined in the dental chair When I requested copies of my X-rays and documentation (which patients are entitled to), I was told I was "fostering a bad relationship." I was then: Refused continued treatment Labeled a "bad client" And as I was leaving, staff were instructed to call security I was not aggressive, did not raise my voice, and was simply advocating for my care and records. In addition, I paid for a saliva lab test during my initial visit and was told I would be contacted within about a week to review the results and create a treatment plan. That follow-up never happened. To their credit, the front office staff remained professional and ultimately provided my records. However, the inconsistency in diagnosis and the way I was treated by Dr. Laura Beatriz Alvisua were unacceptable. Patients deserve: Accurate and consistent diagnoses Respectful communication Transparency in care Access to their records without resistance Due to the seriousness of this situation, I am filing a formal complaint with the Dental Board of California. I've also included a portion of the X-rays taken during my initial visit, specifically the area I raised concerns about at the time. I hope the office takes this seriously and ensures no other patient is treated this way.

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    Taking pictures of him pearly whites!

    Whittier Modern Dentistry - Welcome to Whittier Modern Dentistry in Whittier California!

    Welcome to Whittier Modern Dentistry in Whittier California!

    Whittier Modern Dentistry - Digital X-Ray's in Whittier, CA

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    Digital X-Ray's in Whittier, CA

    Ruben Armienta, DDS - generaldentistry - Updated May 2026

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